8 Result(s)
within
Mark J. Dekkers
Science, Humanities and Social Sciences, multidisciplinary
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Article
Open AccessOrbital- and millennial-scale Asian winter monsoon variability across the Pliocene–Pleistocene glacial intensification
Intensification of northern hemisphere glaciation (iNHG), ~2.7 million years ago (Ma), led to establishment of the Pleistocene to present-day bipolar icehouse state. Here we document evolution of orbital- and ...
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Article
Open AccessRapid light carbon releases and increased aridity linked to Karoo–Ferrar magmatism during the early Toarcian oceanic anoxic event
Large-scale release of isotopically light carbon is responsible for the carbon isotope excursion (CIE) of the Toarcian Oceanic Anoxic Event during the Lower Jurassic. Proposed sources include methane hydrate d...
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Open AccessGlobal warming-induced Asian hydrological climate transition across the Miocene–Pliocene boundary
Across the Miocene–Pliocene boundary (MPB; 5.3 million years ago, Ma), late Miocene cooling gave way to the early-to-middle Pliocene Warm Period. This transition, across which atmospheric CO2 concentrations incre...
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Article
Open AccessOrbital climate variability on the northeastern Tibetan Plateau across the Eocene–Oligocene transition
The first major build-up of Antarctic glaciation occurred in two consecutive stages across the Eocene–Oligocene transition (EOT): the EOT-1 cooling event at ~34.1–33.9 Ma and the Oi-1 glaciation event at ~33.8...
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Open AccessLate Oligocene–Early Miocene magnetochronology of the mammalian faunas in the Lanzhou Basin–environmental changes in the NE margin of the Tibetan Plateau
A large number of terrestrial mammalian fossils were reported in the well-exposed Paleogene and Neogene fluvio-lacustrine strata in Western China. Their accurate ages are crucial to understand the mammalian an...
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Open AccessControl of Earth-like magnetic fields on the transformation of ferrihydrite to hematite and goethite
Hematite and goethite are the two most abundant iron oxides in natural environments. Their formation is controlled by multiple environmental factors; therefore, their relative concentration has been used widel...
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Magnetic force microscopy reveals meta-stable magnetic domain states that prevent reliable absolute palaeointensity experiments
Obtaining reliable estimates of the absolute palaeointensity of the Earth’s magnetic field is notoriously difficult. The heating of samples in most methods induces magnetic alteration—a process that is still p...
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Article
Open AccessNew evidence for early presence of hominids in North China
The Nihewan Basin in North China has a rich source of Early Pleistocene Paleolithic sites. Here, we report a high-resolution magnetostratigraphic dating of the Shangshazui Paleolithic site that was found in th...
