نتایج جستجو برای: magnetostratigraphy
تعداد نتایج: 280 فیلتر نتایج به سال:
We have determined slip rates on the most active reverse faults, reconstructed an extensive preorogenic erosion surface, constructed local and regional cross sections, and dated syntectonic Tertiary sedimentary rock with magnetostratigraphy along an ~northsouth transect that spans the Kyrgyz portion of the west-central Tien Shan. The cumulative late Quaternary shortening rate along this transec...
For over a century, a Neogene fossil mammal fauna has been known in the Irrawaddy Formation in central Myanmar. Unfortunately, the lack of accurately located fossiliferous sites and the absence of hominoid fossils have impeded paleontological studies. Here we describe the first hominoid found in Myanmar together with a Hipparion (s.l.) associated mammal fauna from Irrawaddy Formation deposits d...
Abstract The age of the beginning magnetic polarity Chron M0r, a proposed marker for base Aptian Stage, is disputed due to divergence published radioisotopic dates and ambiguities in stratigraphic correlation sections. Our magnetostratigraphy core DH1 from Svalbard, Norway, calibrates bentonite bed, dated by U-Pb methods 123.1 ± 0.3 Ma, uppermost part magnetozone M1r, which ∼1.9 m.y. before M0r...
International Ocean Discovery Program (IODP) Expedition 382 in the Scotia Sea’s Iceberg Alley recovered among most continuous and highest resolution stratigraphic records Southern near Antarctica spanning last 3.3 Myr. Sites drilled Dove Basin (U1536/U1537) have well-resolved magnetostratigraphy a strong imprint of orbital forcing their lithostratigraphy. All magnetic reversals Myr are identifi...
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