A5005460402- Geomagnetism and Paleomagnetism Studies
- Planetary Science and Exploration
- Geological and Geophysical Studies Worldwide
- Geology and Paleoclimatology Research
- Astro and Planetary Science
- Archaeological and Geological Studies
- Geological and Geochemical Analysis
- Archaeological and Historical Studies
- earthquake and tectonic studies
Karlsruhe Institute of Technology
2023-2024
Utrecht University
2020
Abstract Large impact craters on Earth are associated with prominent magnetic anomalies, residing in magnetite of the shocked target rocks and impactites. Shock experiments suggest that up to 90% susceptibility is lost at pressures >5 GPa, but can be partially restored by post‐shock thermal annealing. The property changes caused shock induced grain size reduction fragmentation, as well domain wall‐pinning crystal lattice defects. A recent study granitoids from peak‐ring Chicxulub crater...
The Chicxulub impact event at ca. 66 Ma left in its wake the only complex crater on Earth with a preserved peak ring, characterized by well-developed magnetic anomaly low. To date, little is known about properties. joint Integrated Ocean Drilling Program (IODP) and International Continental Scientific (ICDP) Expedition 364 drill core M0077A revealed that ring consists of uplifted strongly deformed granitoid basement rocks overlain 130-m-thick melt suevite layer. Pre- postimpact hydrothermal...
The amalgamation of Pangea formed the contorted Variscan-Alleghanian orogen, suturing Gondwana and Laurussia during Carboniferous. From all swirls this a double curve in Iberia stands out, coupled Cantabrian Orocline Central Iberian curve. at ca. 315–290 Ma subsequent to Variscan orogeny. formation mechanism is disputed, most commonly proposed mechanisms include either (1) that south-westernmost would be an Avalonian (Laurussian) indenter or (2) stress field changed, buckling orogen. In...
Abstract Large‐scale impact events are some of the most catastrophic and instantaneous geological processes in nature, leave their wake conspicuous structures with characteristic magnetic anomalies. Despite anomalies craters being well‐documented, relationship mineral composition target impactites is not always straightforward. Furthermore, influence shock post‐impact magnetism natural remains elusive. In Ries crater, Germany, negative attributed to a reverse polarity remanent magnetization...
<p>Supplemental Text is a descriptive document that contains information about the core correction procedure, additional hysteresis parameters vs. depth data, and brief explanation of remaining supplemental files. Supplemental Data S1 includes all electron probe microanalyzer (EPMA) including calibration for measurements. Highlighted samples are selected Table 1. S2 temperature-dependent magnetic susceptibility (k-T) table with parameters, used 2. S3 thermomagnetic curves (M-T) both...
<p>Supplemental Text is a descriptive document that contains information about the core correction procedure, additional hysteresis parameters vs. depth data, and brief explanation of remaining supplemental files. Supplemental Data S1 includes all electron probe microanalyzer (EPMA) including calibration for measurements. Highlighted samples are selected Table 1. S2 temperature-dependent magnetic susceptibility (k-T) table with parameters, used 2. S3 thermomagnetic curves (M-T) both...
&lt;p&gt;The amalgamation of Pangea formed the contorted Variscan-Alleghanian orogen suturing Gondwana and Laurussia during Carboniferous. From all swirls this orogen, a double curve stands out in Iberia, coupled Cantabrian Orocline Central Iberian Curve. The subsequent to Variscan orogeny (ca. 315-295 Ma). mechanisms formation for orocline are disputed being most prominent:&lt;/p&gt;&lt;p&gt;1) An Avalonian (Laurussia) indenter at SW that would form sinistral...