نتایج جستجو برای: tethys

تعداد نتایج: 784  

Journal: :Monthly Notices of the Royal Astronomical Society 1977

2002
R. Mark Leckie Timothy J. Bralower Richard Cashman

[1] Mid-Cretaceous (Barremian-Turonian) plankton preserved in deep-sea marl, organic-rich shale, and pelagic carbonate hold an important record of how the marine biosphere responded to shortand long-term changes in the ocean-climate system. Oceanic anoxic events (OAEs) were short-lived episodes of organic carbon burial that are distinguished by their widespread distribution as discrete beds of ...

Journal: :The China Geological Survey Series 2023

The Sanjiang Tethyan Metallogenic Domain refers to the Hengduan Mountain Range where Nujiang River, Lancang River and Jinsha run side by side, spanning western Yunnan, Sichuan, eastern Tibet southern Qinghai, including Qinghai-Tibet Plateau Yunnan-Guizhou Plateau, with an area of about 50 × 104 km2. range belongs part global Tethys-Himalayan Tectonic structurally, which is in region Gondwana Eu...

Journal: :journal of tethys 0

the subduction of the northern part of the tethys is documented by arc magmatism from upper triassic to lower eocene crosscutting the sanandaj-sirjan zone and from upper eocene to plio-quaternary in the urumieh-dokhtar magmatic zone, situated north of the ssz. neyriz ophiolite is part of middle eatern neo-tethyan ocean of mesozoic that geographically is related to ophiolites of nw-se iran, alon...

Journal: :Global and Planetary Change 2022

The end-Triassic mass extinction (ETME) was associated with intensified deep-water anoxia in epicontinental seas and mid-depth waters, yet the absolute oxygenation state shallow ocean is uncharacterized. Here we report carbonate-associated iodine data from peritidal Mount Sparagio section (Southern Italy) that documents ETME (~ 200 Ma) western Tethys. We find a sharp drop carbonate I/(Ca + Mg) ...

Journal: :Earth and Planetary Science Letters 2014

Journal: :Collection of Scientific Works of the Institute of Geological Sciences of the NAS of Ukraine 2015

2016
Yoshiki Ninomiya Bihong Fu

The mineralogical indices the Quartz Index (QI), Carbonate Index (CI) and Mafic Index (MI) for ASTER multispectral thermal infrared (TIR) data were applied to various geological materials for regional lithological mapping on the Tibetan Plateau. Many lithological and structural features are not currently well understood in the central Tibetan Plateau, including the distribution of mafic-ultrama...

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