Podcasts about radiometric

Radiometric dating is founded on assumptions that can't be proven and appear to be, well, false! It doesn't confirm an old earth.

Radiometric dating methods are often cited as evidence for millions of years of evolution, but are these methods reliable? Dr. Mark Harwood explores how these dating techniques rely on multiple assumptions that can be adjusted to fit pre-existing beliefs about Earth’s age. He shares startling examples of inconsistencies, like rocks of known age returning wildly inaccurate dates, challenging the accuracy of dating methods as a whole. Dr. Harwood suggests that the real authority lies in eyewitness historical accounts, particularly those found in the Bible. He discusses how adopting a deep-time perspective contradicts the biblical timeline, potentially undermining its authority and the gospel message.

Gold Mountain Ltd (ASX: GMN) executive director David Evans sits with Jonathan Jackson in the Proactive studio to discuss initial findings from its Down Under REE Project in Brazil. The company has received results from 260 stream sediment samples and conducted 85 kilometres of detailed geophysical radiometric surveys. Assays indicate widespread anomalies across an 80 square kilometre area and suggest the potential for ultra-high-grade hard rock monazite-hosted REE-niobium-uranium-scandium mineralisation. Extensive REE anomalous catchments have been identified, forming highly anomalous areas up to 8 kilometres in length. Radiometric surveys revealed thorium anomalies up to 1,600 metres wide. In total, 44 spectrometer radiometric traverse lines were conducted, inferring potential areas of significant mineralisation from the geochemical results and radiometric traversing. The comparison of these radiometric values with those in known REE mineralised areas shows similar results within GMN tenements. An auger drill rig has been ordered, with expected delivery in July 2024, to commence drilling in five identified target areas. Follow-up exploration will include further drilling, additional spectrometer traverses and further sediment sampling to confirm REE content. Results from the ongoing laboratory analysis are expected by the end of July. The exploration program also extends to the Ronaldinho Project, where similar techniques are being employed. #ProactiveInvestors #GoldMountainLtd #ASX #REEExploration, #MiningUpdates, #RareEarths, #GeophysicalSurvey, #Mineralisation, #StreamSedimentSampling, #RadiometricSurvey, #AugerDrilling, #ThoriumAnomalies, #Monazite, #GeochemicalResults, #RadiometricTraversing, #DownUnderProject, #RonaldinhoProject, #HighGradeMineralisation, #ExplorationTargets, #MiningNews, #ASXAnnouncements, #REEAssays #invest #investing #investment #investor #stockmarket #stocks #stock #stockmarketnews

Radiometric dating is widely used to establish the age of various artifacts.  Carbon 14 is used to assess the age of artifacts assumed to be in the range of 50,000 years or less.  Logical and empirical grounds challenging the "standard" interpretation of C14 dating is discussed.

Does the creation story on Genesis Chapter One make sense? Does it contradict itself? Was it given to Moses from God, or is it more likely a song passed down from God to Adam, from generation to generation until it made its way t the Bible? This week we look at the first chapter of the greatest book ver written and try to unlock its secrets. Does science agree with the story of creation in the Bible?Time Codes0:00 - Recap from last study3:29 - Genesis Chapter One the First four days of creation7:34 - God makes man by speaking to himself.10:52 - Science points to God.12:25 - How long did Creation take? Radiometric dating.16:45 - Who was the first human to hear the creation story?20:03 - Genesis chapter one is the first song ever written in the Bible.23:29 - Closing thoughts.Support Conway tabernacle through online giving:https://give.tithe.ly/?formId=b4ea3117-4ed7-4c98-b00d-1037fee72856Follow Not Gospel Studios YouTube to stay up to date on original music, books, podcast, and a streaming webs-series and Christian mokumenterary series (BIG little Church). Listen to the Not Gospel Podcast everywhere Podcasts are streamed!Spotify @  shorturl.at/egET0Player FM @ https://player.fm/series/2976179Apple Podcasts @  https://podcasts.apple.com/us/podcast...Please LIKE my pages and Follow!Stay up to date on my website www.wordsbycliff.comFollow me on: Facebook @ https://www.facebook.com/NotGospelbyC...Amazon @ shorturl.at/moHP8Man Of God Paperback available NOW!#betterlife #christiancomedian #biblestudy #creation #genesis #sundayschool #christianpodcast #biblecommentary #evolution #notgospel #hoggospel

Radiometric dating Radiometric dating is often used by scientists to determine the age of rocks and, by extension, the age of the earth…

Message from Josh Whitney on December 13, 2023

In 1980, Mount St. Helens (in Washington State, USA) erupted, blasting the top and side off the mountain. Then, as volcanoes do, it began to rebuild. In 1992, samples of new volcanic rock—KNOWN to be only about 10 years old—were dated using standard radiometric dating techniques. The results were eye-opening. Radiometric dating is not all it’s cracked up to be! In fact, it’s fair to ask: “Can radiometric dates be trusted at all?” Join geologist Dr Tas Walker for a discussion of the Mount St. Helens eruption and its aftermath, the fundamental flaws in radiometric dating methods, and the relevance of the age of the earth to people’s view of the world. ✍️ Links and Show Notes Learning the lessons of Mount St Helens The lava dome at Mount St Helens debunks dating methods Countering the critics: Radio-dating in Rubble More questions on the dating of Mount St Helens lava dome Excess argon within mineral concentrates from… More and more wrong dates: Radio-dating in Rubble A helpful explanation of how dating methods are…

“Calibration is the poor step-child of remote sensing designs” - Ellis FreedmanWelcome back to the second part of our conversation with Ellis Freedman, the founder of Serious Science. In the previous episode, Ellis talked about the differences between big space missions and smaller newspace ones. Today, we're diving into thermal mission design.We'll cover essential topics like challenges in satellite bus design for thermal payloads, calibrating IR sensors, and understanding the hardware behind IR imaging systems. Ellis emphasizes the significance of fundamental radiometry knowledge for users of thermal data, elaborating on several key concepts, and delves into the skills required to work with thermal data. And lastly, he discusses the impact of AI and ML on thermal data processing and shares his predictions for the future of thermal remote sensing.(00:00) - Intro (01:28) - Challenges in mission design for thermal satellites (10:42) - Calibration of IR sensors (14:18) - Hardware components of IR imaging systems (18:29) - Radiometry knowledge required for thermal data users (22:02) - Skills needed to work with thermal data (25:24) - Radiometric processing in TIR vs Visible (26:45) - Impact of AI and ML on thermal data processing (30:40) - Future evolution of thermal remote sensing (34:57) - The End

In this episode on Earth SciShow, MrEarthGuy dives into the history of radioactivity and its implications on geology. Radiometric dating is one of the most accurate techniques we have to date samples of the ancient Earth and measure its age. By using Uranium-238 and Lead-206 we are able to using isotopic ratios to determine how old a sample is. We have applied this technique to terrestrial bound crystals like Zircon, and more exotic samples from lunar rocks and meteorites. #Earth #Geology #Science

Lance Weaver is a geologist, desert guide, and amateur archaeologist who explores alternative narratives of history since the last ice age. We catch up about new developments in his pole shift research before diving into his paleoarchaeological research on pre-Columbian contact between the Mediterranean and Meso-American cultures. Along the way we wrestle with convergent iconography on both sides of the ocean, bird gods with handbags, anomalous Sumerian artifacts, the true location of Babylon, and the Sons of Light. Support the scientific revolution by joining our Patreon: https://bit.ly/3lcAasB Tell us what you think in the comments or on our Discord: https://discord.gg/MJzKT8CQub (00:00:00) Go! (00:04:43) Updates to the pole shift story (00:24:27) Alternative versions of prehistory (00:32:13) Evidence for Egyptian transoceanic travel (00:34:46) Bird god holding a bag (00:41:48) Radiometric dates as gospel (00:44:19) Etruscan figurine in Toluca (00:47:52) Tree of Life (00:51:58) Trees, felines, and the waters below (01:02:37) A convergent evolution? (01:05:44) Odd North American Artifacts (01:10:58) Hallstatt Plateau (01:21:36) Ixtlilxóchitl's History of Mexico (01:30:12) Nature of cultural exchange (01:38:51) A master culture? (01:44:45) The Kolbirn and its Origins (01:51:57) Ancient traditions & scientific analysis (02:00:21) Visiting the New World (02:04:29) What's in the bag? (02:12:23) King Solomon's Temple (02:29:09) Where were the hanging gardens of Babylon? (02:37:14) Changing the World (02:45:17) The Future #paleoarchaeology #ancienthistory #seapeoples Check our short-films channel, @DemystifySci: https://www.youtube.com/c/DemystifyingScience AND our material science investigations of atomics, @MaterialAtomics https://www.youtube.com/@MaterialAtomics Join our mailing list https://bit.ly/3v3kz2S PODCAST INFO: Anastasia completed her PhD studying bioelectricity at Columbia University. When not talking to brilliant people or making movies, she spends her time painting, reading, and guiding backcountry excursions. Michael Shilo also did his PhD at Columbia studying the elastic properties of molecular water. When he's not in the film studio, he's exploring sound in music. They are both freelance professors at various universities. - Blog: http://DemystifySci.com/blog - RSS: https://anchor.fm/s/2be66934/podcast/rss - Donate: https://bit.ly/3wkPqaD - Swag: https://bit.ly/2PXdC2y SOCIAL: - Discord: https://discord.gg/MJzKT8CQub - Facebook: https://www.facebook.com/groups/DemystifySci - Instagram: https://www.instagram.com/DemystifySci/ - Twitter: https://twitter.com/DemystifySci MUSIC: -Shilo Delay: https://g.co/kgs/oty671

Radiometric sensitivity and resolution of synthetic tracking imaging for orbital debris monitoring by Hasan Bahcivan et al. on Monday 21 November We consider sampling and detection strategies for solar illuminated space debris. We argue that the lowest detectable debris cross section may be reduced by 10-100x by analysis of phase-space-pixels rather than single frame data. The phase-space-pixel is a weighted stacking of pixels corresponding to a test debris trajectory within the very wide camera field-of-view (FOV). To isolate debris signals from background, exposure time is set to match the time it takes a debris to transit through the instantaneous field of view. Debris signatures are detected though a generalized Hough transform of the data cube. Radiometric analysis of line integrals shows that that sub-cm objects in Low Earth Orbit can be detected and assigned full orbital parameters by this approach arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.09789v1

Radiometric sensitivity and resolution of synthetic tracking imaging for orbital debris monitoring by Hasan Bahcivan et al. on Monday 21 November We consider sampling and detection strategies for solar illuminated space debris. We argue that the lowest detectable debris cross section may be reduced by 10-100x by analysis of phase-space-pixels rather than single frame data. The phase-space-pixel is a weighted stacking of pixels corresponding to a test debris trajectory within the very wide camera field-of-view (FOV). To isolate debris signals from background, exposure time is set to match the time it takes a debris to transit through the instantaneous field of view. Debris signatures are detected though a generalized Hough transform of the data cube. Radiometric analysis of line integrals shows that that sub-cm objects in Low Earth Orbit can be detected and assigned full orbital parameters by this approach arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.09789v1

In-flight radiometric calibration of the ExoMars TGO Colour and Stereo Surface Imaging System by Antoine Pommerol et al. on Monday 10 October The Colour and Stereo Surface Science Imaging System (CaSSIS) of the ExoMars Trace Gas Orbiter returns on average twenty images per day of the Martian surface, most of them in 3 or 4 colours and some of them in stereo. CaSSIS uses a push-frame approach to acquire colour images, with four bandpass filters deposited directly above the sensor and an imaging cadence synchronized with the ground track velocity to cover the imaged area with tens of small, partially overlapping images. These "framelets" are later map-projected and mosaicked to build the final image. This approach offers both advantages and challenges in terms of radiometric calibration. While the collection of dark and flatfield frames is considerably enhanced by the frequent and fast acquisition of tens of successive images, mosaics assembled from the adjacent framelets highlight the straylight and changes in the bias of the detector. Both issues have been identified on CaSSIS images, with low intensities overall (up to a few percents), but sufficient to generate prominent artefacts on the final assembled colour images. We have therefore developed methods to correct these artefacts that are now included into the radiometric calibration pipeline. We detail here the different steps of the calibration procedure and the generation of the products used for calibration, and discuss the efficacy of the corrections. The relative uncertainties on the bias and flatfield frames are low, of the order of 0.2 and 0.1 percents, respectively. The uncertainty on the absolute radiometric calibration is of 3 percents, which is quite low for such an instrument. The straylight adds an estimated about 1 percent error to the absolute calibration. The residuals after corrections of the straylight and bias offsets are of the order of a few DNs to tens of DNs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.04316v1

In-flight radiometric calibration of the ExoMars TGO Colour and Stereo Surface Imaging System by Antoine Pommerol et al. on Monday 10 October The Colour and Stereo Surface Science Imaging System (CaSSIS) of the ExoMars Trace Gas Orbiter returns on average twenty images per day of the Martian surface, most of them in 3 or 4 colours and some of them in stereo. CaSSIS uses a push-frame approach to acquire colour images, with four bandpass filters deposited directly above the sensor and an imaging cadence synchronized with the ground track velocity to cover the imaged area with tens of small, partially overlapping images. These "framelets" are later map-projected and mosaicked to build the final image. This approach offers both advantages and challenges in terms of radiometric calibration. While the collection of dark and flatfield frames is considerably enhanced by the frequent and fast acquisition of tens of successive images, mosaics assembled from the adjacent framelets highlight the straylight and changes in the bias of the detector. Both issues have been identified on CaSSIS images, with low intensities overall (up to a few percents), but sufficient to generate prominent artefacts on the final assembled colour images. We have therefore developed methods to correct these artefacts that are now included into the radiometric calibration pipeline. We detail here the different steps of the calibration procedure and the generation of the products used for calibration, and discuss the efficacy of the corrections. The relative uncertainties on the bias and flatfield frames are low, of the order of 0.2 and 0.1 percents, respectively. The uncertainty on the absolute radiometric calibration is of 3 percents, which is quite low for such an instrument. The straylight adds an estimated about 1 percent error to the absolute calibration. The residuals after corrections of the straylight and bias offsets are of the order of a few DNs to tens of DNs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.04316v1

Radiometric dating is believed to be proof of long ages. But the process is layered with assumptions.

Radiometric dating is often given as proof of long ages. Now, there's big, unprovable assumptions behind this.

A popular myth is that radioactive dating methods confirm the geologic time-scale and the concept of human evolution. The methods appear so impressive that many Christians accept them as evidence that the earth is very old. Many have been taught that radiometric dating methods are absolute. But exactly how solid are those dates?

Join Joe, John, Diane and Sam for a discussion on dating methods - Carbon 14, Radiometric and others.

Radiometric dating sheds light on tectonic debate - By American Geophysical Union. Read by Rendy Mulaudzi. To read the full story, go to https://news.agu.org/press-releases/

Charlie is back for the third time to discuss radiometric dating. He opens the discussion by analyzing what is it that can cause radiometric clocks to be reset and continues the discussion, examining the paradigm behind the dating methods. He addresses the deep time assumptions that go into the method. Stay tuned for the final episode!

Scientists have embraced a toxic partner, namely, radiometric dating. Is it time for scientists to break up with radiometric dating? AP Physics teacher Charlie Wolcott says, yes! Join Charlie in this four-part series on radiometric dating. In this first episode, Charlie will be going over the facts and fiction of radiometric dating.

Have you ever wondered how we can earn about the age of rocks and what that information can enlighten us on? By using the temperature and other strategies, we can gain a clearer picture of just what happened when these rocks were formed. Listen in to learn: The limitations of radiometric dating The sweet spot for dating a rock Why rain can interfere with the process Peter Copeland, a Professor of Geology and Thermochronology at the University of Houston, shares his work dating minerals and examining the thermochronology of rocks. Radiometric dating is one of the primary tools used to learn the history of the world we live on. By using isotopes of Potassium and Uranium, their half-lives can be examined to determine the date they were formed and what that reveals about the world at that time. Since half-lives are not obstructed by various factors faced by ancient samples of a rock or mineral, this strategy is the best possible method of study. While this is not the only way and the other primary method only requires a microscope, it remains one of the most accurate and reliable. https://www.uh.edu/nsm/earth-atmospheric/people/faculty/peter-copeland/ Episode also available on Apple Podcast: http://apple.co/30PvU9C

You don’t need radiometric dating to discover the first rock-n-roll song to top the Billboard charts was written by a guy from the 1800’s. But you DO need to know how that’s even possible. And I’m here to share a … Read the rest The post Radiometric dating and rock-n-roll reverberating appeared first on Tony Funderburk.

Fossil Men: The Quest for the Oldest Skeleton and the Origins of Humankind by Kermit Pattison kermitpattison.com A decade in the making, Fossil Men is a scientific detective story played out in anatomy and the natural history of the human body: the first full-length account of the discovery of a startlingly unpredicted human ancestor more than a million years older than Lucy It is the ultimate mystery: where do we come from? In 1994, a team led by fossil-hunting legend Tim White uncovered a set of ancient bones in Ethiopia’s Afar region. Radiometric dating of nearby rocks indicated the resulting skeleton, classified as Ardipithecus ramidus—nicknamed “Ardi”—was an astounding 4.4 million years old, more than a million years older than the world-famous “Lucy.” The team spent the next 15 years studying the bones in strict secrecy, all while continuing to rack up landmark fossil discoveries in the field and becoming increasingly ensnared in bitter disputes with scientific peers and Ethiopian bureaucrats. When finally revealed to the public, Ardi stunned scientists around the world and challenged a half-century of orthodoxy about human evolution—how we started walking upright, how we evolved our nimble hands, and, most significantly, whether we were descended from an ancestor that resembled today’s chimpanzee. But the discovery of Ardi wasn’t just a leap forward in understanding the roots of humanity--it was an attack on scientific convention and the leading authorities of human origins, triggering an epic feud about the oldest family skeleton. In Fossil Men, acclaimed journalist Kermit Pattison brings us a cast of eccentric, obsessive scientists, including White, an uncompromising perfectionist whose virtuoso skills in the field were matched only by his propensity for making enemies; Gen Suwa, a Japanese savant whose deep expertise about teeth rivaled anyone on Earth; Owen Lovejoy, a onetime creationist-turned-paleoanthropologist with radical insights into human locomotion; Berhane Asfaw, who survived imprisonment and torture to become Ethiopia’s most senior paleoanthropologist; Don Johanson, the discoverer of Lucy, who had a rancorous falling out with the Ardi team; and the Leakeys, for decades the most famous family in paleoanthropology. Based on a half-decade of research in Africa, Europe and North America, Fossil Men is not only a brilliant investigation into the origins of the human lineage, but the oldest of human emotions: curiosity, jealousy, perseverance and wonder. About Kermit Pattison Kermit Pattison is the author of Fossil Men: The Quest for the Oldest Skeleton and the Origins of Humankind. He lives with his family in Minnesota.

Radiometric dating is based on a host of assumptions. And if even one of these assumptions is wrong, radiometric dating can’t be trusted to give vast ages for rocks.

Radiometric dating is used to give ages to various rocks. Most people believe it’s accurate. After all, it’s simple science, right?

Evidence for evolution from many fields has been thoroughly refuted but continues to be taught. We summarize key refutations from areas including: Vestigial organs, Junk DNA, Humans and chimp DNA 99% similar, Homology, Human embryos go through evolutionary stages, Transitional fossils, Pakicetus, Tiktaalik, Ape-men, Human evolution, Radiometric dating, Distant starlight.

For this "Do the Review" episode we review the first half of the nuclear chapter from your textbook and Conceptual Academy. Topics include the nature of radioactivity, the behavior of the atomic nucleus, transmutation, radioactive half-life, and radioactive dating. Duration: 37:45.

STEMxm Episode 25 -  Ocean Corals and Climate Change with Jessica Carilli, PhD This is the 2nd episode in a series touching on climate change careers and research. Check out the others here: Episode 23 - Atmospheric Physics with Dr. Joanna Haigh Episode 24 - Theoretical Ecology with Dr. Emily Moberg Where Jessica earned a PhD - Scripps Institution of Oceanography Stuff we discussed  -- How are scientists able to "go back in time" to study how the environment was on earth many years ago? Ocean floor core sampling Tree rings as a way to understand the environment in years past (Dendrochronology) - This audio clip is an excellent explanation of how scientists use tree rings in combination other data to perform dating: listen here Ice corps from Greenland and Antarctica Corals also have annual layers they grow through time. You can use these similarly We also spoke with Dr. Holmes in episode 14 about core sampling! How do scientists date this stuff? Radiometric clocks! How carbon dating works (must click through all pages)! Ice core sample dating works and what the heck is ferne? Now Corals... How do we date corals?  More core sampling! Then what?  X-rays and Cat-scans for corals Proxies of past ocean chemistry How does sediment runoff impact corals?   Phytoplankton Zooplankton Ocean acidification Saltwater Science Blog (no longer active) Jessica's personal Blog Jessica's Twitter   STEMxm is available on iTunes & Stitcher:

How do scientists use geology to determine time? In this video Mike uses observational evidence to demonstrate that: The geologic layers (column) do not support millions of years. Radiometric dating is based on assumptions and is not an accurate method for dating objects. The post The Bible, Geology and Time appeared first on Creation Training Initiative with Mike Riddle.

How do scientists use geology to determine time? In this video Mike uses observational evidence to demonstrate that: -The geologic layers (column) do not support millions of years. -Radiometric dating is based on assumptions and is not an accurate method for dating objects. The post Time, Age, and Dinosaurs appeared first on Creation Training Initiative with Mike Riddle.

Lecture 2: In Situ Radiometric Products (uncertainty analysis and applications) Data products from in–water radiometric measurements generally include spectral values of: irradiance reflectance, remote sensing reflectance, normalized water–leaving radiance, diffuse attenuation coefficient and the so called Q‐factor. Data products from above–water radiometric measurements are generally restricted to the normalized water–leaving radiance and the remote sensing reflectance. By restricting the analysis to the normalized water‐leaving radiance, the lecture addresses the various sources of uncertainties affecting in situ radiometric measurements (e.g., accuracy of absolute calibration, superstructure perturbations, changes in illumination conditions, wave effects and selfshading for in‐water methods only). Emphasis is placed in the evaluation of methods allowing for the minimization of the various perturbing effects and additionally in the quantification of contributions of these latter to uncertainty budgets. Further element considered in the lecture is the application of in situ radiometric data to the assessment of satellite primary products (i.e., the normalized water leaving radiance determined from top‐of‐atmosphere radiance corrected for the atmospheric perturbations). Focus is placed on the use of in situ data to evaluate differences in cross‐mission products (i.e., normalized water leaving radiance from SeaWiFS, MODIS‐A, MODIS‐T and MERIS), variations in space system performance with time and intra‐annual changes in accuracy. Bibliography G. Zibordi and K.J. Voss. Field Radiometry and Ocean Color Remote Sensing. In Oceanography from Space, revisited. V. Barale, J.F.R. Gower and L. Alberotanza Eds., Springer, Dordrecht, pp. 365‐398, 2010.

Drought and oil in gulf, Radiometric dating anomalies, Francis Collins' views

The Earth's magnetic field is generated by the motion of liquid iron-rich material in the outer core. One of the most drastic manifestations of the dynamics in the outer core are polarity reversals of the magnetic field. The processes controlling geomagnetic reversals, however, are still poorly understood. The mathematical formulation of the dynamics of the liquid outer core show such a degree of complexity that a universal numerical model still remains elusive. Given that the last reversal occurred about 780,000 years ago, direct observations of a reversal have never been possible. Thus we are left with records of ancient reversals recorded in sequences of sedimentary and igneous rocks. Documenting any systematics in reversal processes will provide substantial information about the outer core and core mantle boundary conditions. However, despite the advances in deciphering the behaviour of the field during polarity transitions, reversal records yield controversial results and thus answers to several key questions are still enigmatic. Detailed studies of palaeodirectional and absolute palaeointensity patterns of geomagnetic reversals are scarce and are restricted to the Cenozoic so far. In order to verify or reject concepts developed on the basis of this dataset, reversal records which occurred in the more distant geological past of the Earth are needed. This work presents the results obtained from the Siberian Trap Basalts (Russia) which are coeval with the Permo-Triassic boundary (250 Ma). The sequence yields the by far oldest hitherto studied detailed record of a geomagnetic transition from reversed to normal polarity and provides new insights in transitional field behaviour. Three sections (Talnakh, Listvjanka and Abagalakh) comprising a total of 86 lava flows have been sampled in the Noril'sk region, located at the northwestern rim of the Siberian Trap Basalt province. They provide a complete coverage of the lava pile outcropping in the area. The samples have been subjected to palaeomagnetic direction analysis and to Thellier-type palaeointensity experiments. Extensive rockmagnetic investigations and microscopical studies have been carried out to asses the reliability of the palaeomagnetic information recorded by the lava flows. Magnetite and Ti-poor titanomagnetites were identified to be the carriers of the characteristic remanent magnetisation. The reversibility of the thermomagnetic curves and the observation of exsolution lamellae by ore microscopy give clear evidence for a primary high-temperature oxidation of the titanomagnetite. It can thus be inferred that the measured palaeodirectional and intensity information obtained from these flows was acquired shortly after extrusion of each flow. The demagnetisation of the natural remanence reveals only one direction of magnetisation for most samples. Thermal and alternating field demagnetisation methods are equally effective in isolating the characteristic remanent magnetisation. Occasional overprints have maximum unblocking temperatures of 350°C or remanence coercivities less than 20 mT. Reliable palaeointensity estimates were obtained for approx. 50% of the samples. The relatively high success rate can be attributed to the enhanced magnetic and thermal stability of high-temperature oxidised titanomagnetites. In the lower part of the sequence reversed polarity of the Earth's magnetic field is identified. The associated palaeointensities yield values around 10 µT. The subsequent flows recorded transitional configurations. A tight cluster of virtual geomagnetic poles (VGPs) in mid northerly latitudes, comprising the results of 15 flows, is observed during the transition. Within the cluster the record shows a pronounced and well defined increase in intensity from around 6 to 13 µT. A doubling of local field intensity infers that large scale dynamic processes in the outer core are responsible for this feature, making a strong case for a reasonable temporal stability (several hundreds to a few thousand years) of the VGP cluster. Moreover, the VGP clustering is identified in two parallel sections (Talnakh and Listvjanka). This observation makes it unlikely that this feature is an artifact of a localised burst in volcanic activity and supports the concept of stabilised phases of the geomagnetic field during reversals. The VGPs of the overlying flows move towards the position expected for normal polarity. After rotating of the VGPs into the Late Permian/Early Triassic geographic reference system it is evident that most of the transitional VGPs are strongly confined to a narrow longitudinal band which is perpendicular to near- or far-sided VGP paths. Such near- or far-sided paths would be indicative for the dominance of zonal, and thus axis-symmetric, non-dipole fields. The VGP path of this transition suggests the contribution of strong sectorial components of the Earth's magnetic field. Following the transition itself, normal polarity is reached for a brief time interval. Subsequently, the VGPs depart from this position to form another well defined directional cluster recorded by 14 successive flows. During this clustering, which is interpreted as an excursion of the Earth's magnetic field, no characteristic variation in palaeointensity is identified (mean value 14 µT). Such post-transitional excursions are frequently observed in younger reversal records and are explained by instabilities of the geodynamo after the reversal. However, VGPs associated with post-transitional excursions usually reach positions similar to those occupied by VGPs during the transition. In contrast to such "rebound" effects, the excursion-related VGPs of this record are still confined to the latitudinal band defined by the transition, but "overshoot" normal polarity. This geometrical constraint suggests that non-dipole components similar to those dominating the transitional VGP path are responsible for this observation. Remarkably, the geomagnetic polarity transition described here shares many similarities - such as directional clustering, longitudinal confinement of the VGP path, the existence of a post-transitional excursion and generally low palaeointensities - with previously published reversal records of mainly Tertiary age. It may, therefore, be inferred that the underlying reversal processes are similar to those observed for the Cenozoic. The results obtained of the superjacent 41 flows, which were extruded immediately after the reversal-related excursion, indicate that only at this stage of the record stable normal polarity is reached allowing to determine several characteristic parameters of the Early Triassic Earth's magnetic field. The mean palaeointensity for this part of the sequence is 19 µT, which corresponds to a virtual geomagnetic dipole moment (VDM) of 2.3 * 10^22 Am^2. These findings confirm that the Mesozoic dipole low extends at least down to the Permo-Triassic boundary. Calculation of the recorded secular variation yields values similar to those averaged over the last 5 Ma, a period with distinctly higher mean VDM (5.5 * 10^22 Am^2) compared to the data presented here. The hypothesis of enhanced secular variation during phases of a low mean VDM can, therefore, not be substantiated by this study. Secular variation and the strength of the dipole moment seem to be - at least in the Early Mesozoic - more complexly coupled than previously assumed. Magnetostratigraphic results of borehole samples obtained from basalts related to the Siberian Trap volcanism including the West Siberian basin yield in total 6 polarity intervals. Comparison to the global magnetostratigraphic scale indicates that the volcanic activity lasted no more than 3.2 Ma. However, the lava sequence in the Noril'sk area (more than 1700 m thick), representing the bulk of the erupted material, recorded only one polarity transition. This finding has been supported by data derived from boreholes in close vicinity to the surface sections which makes the presence of further undetected polarity transitions highly unlikely. It can be thus inferred that the emplacement of the sequence occurred much faster than the aforementioned 3.2 Ma. Radiometric ages suggest an upper limit for the duration of the emplacement of approximately 1 Ma. Based on the assumptions of similar rates of angular secular variation in the Early Triassic and in the Holocene and an average duration of the transition itself the time interval covered is estimated to be in the order of 15000 years. This value has to be regarded as a lowermost limit for the duration of the emplacement. Such a rapid development of the volcanic province in the Noril'sk area would imply an enormous eruption rate making a strong case for the Siberian Trap basalts as cause for the Permo-Triassic crisis.