Results 101 to 110 of about 4,975 (285)

Relationship between continental chemical weathering trends in the North China Basin and the high-latitude glacial cycles from the Late Carboniferous to the Early Permian

Meitian dizhi yu kantan
Objective and Methods The Late Paleozoic Ice Age (LPIA; ca. 360‒254 Ma), the only period recording the transition from icehouse to greenhouse conditions throughout the geological history, can provide a deep-time perspective for glacier-environment ...
Ziyu LING, Minfang YANG, Lei WANG, Ye WANG, Peixin ZHANG, Haoqing LIU, Longyi SHAO, Jing LU   +7 more
doaj   +1 more source

Sediment distribution and provenance since Late Pleistocene in Laizhou Bay, Bohai Sea, China

China Geology, 2019
: There are three transgression-regression events and evolutions of the sedimentary environment by sea level changes since the Pleistocene in the southern section of the Bohai Sea, China. It is obvious that a multi-source fluvial delta sedimentary system
Mao-sheng Gao, Fei Guo, Xue-yong Huang, Guo-hua Hou   +3 more
doaj   +1 more source

Environmental changes during the Last Interglacial period around the Japanese Islands ; comparison and integration of land and marine environments

The Journal of the Geological Society of Japan, 2009
更新世後期の最終間氷期を中心に，日本列島陸域および周辺海域の古気候・古環境変動について研究の現状を紹介し，今後の課題を提起した．海洋域では海底コアの多面的な解析が，海洋環境と古気候変動の解明に大きく貢献している．陸域の研究では，長期間に及ぶ連続堆積物を用いた花粉分析や珪藻分析，有機炭素分析によって高精度の古気候復元が試みられている．海域と陸域を繋ぐ鍵として広域テフラの有用性は高く，琵琶湖堆積物や高野層に挟まれた指標テフラは古気候を時間・空間的に結合させて復元する鍵となる．特に指標テフラ密度の高い9～10万年前の日本列島とその周辺は，有望な研究対象である．このように，テフラを介して海域と陸域の古気候・古環境情報を比較・統合して，高時間分解能で総合的な古気候復元を行うことは ...
Fujio Kumon, Masanobu Yamamoto, Yoshitaka Nagahashi, Kan Aoike   +3 more
openaire   +2 more sources

(Table 1) Content of sand fraction components in sediments of the interglacial MIS 7 optimum from Core LV28-42-4

, 2006
Distribution of diatoms, radiolarians, planktonic and benthic foraminifers, and sediment components in fraction >0.125 mm was analyzed in a core obtained from the central Sea of Okhotsk within frameworks of the Russian-German KOMEX Project.
Galina Kh Kazarina (7915166), Biebow, Nicole, Dirk Nürnberg (6968570), Alexander G Matul (6982631), Matul, Alexander G, Tiedemann, Ralf, Tatyana A Khusid (7915169), Max S Barash (6887036), Andrea Abelmann (6967136), Barash, Max S, Abelmann, Andrea, Khusid, Tatyana A, Ralf Tiedemann (6886628), Nicole Biebow (6982040), Kazarina, Galina Kh, Nürnberg, Dirk   +15 more
core   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

An Assessment of the Climate Change Impacts on the Distribution of the Glacial Relict Woodpecker Three-Toed Woodpecker Picoides tridactylus

Animals
The Three-Toed Woodpecker Picoides tridactylus is a rare and endangered woodpecker on the Balkan Peninsula. Despite being widely distributed in Northern Europe, its distribution on the Balkan Peninsula is limited to high-altitude forest habitats, where ...
Teodora Popović, Nina B. Ćurčić, Snežana Đurđić, Gorica Stanojević, Marko Raković   +4 more
doaj   +1 more source

Phylogeography and ecological niche modeling unravel the evolutionary history of the Yarkand hare, Lepus yarkandensis (Mammalia: Leporidae), through the Quaternary

BMC Evolutionary Biology, 2019
Background The Taklimakan Desert in China is characterized by unique geological and historical dynamics and endemic flora and fauna, but the influence of historical climate oscillations on the evolutionary history of endemic animals is poorly understood.
Brawin Kumar, Jilong Cheng, Deyan Ge, Lin Xia, Qisen Yang   +4 more
doaj   +1 more source

Identifying the pre‐Odra river system with hydroacoustic and seismic reflection imagery offshore Rügen Island, southern Baltic Sea

Boreas, EarlyView.
Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt, Elisabeth Seidel, Christian Hübscher, Benedikt Haimerl, Jonas Preine   +4 more
wiley   +1 more source

Understanding the Permafrost–Hydrate System and Associated Methane Releases in the East Siberian Arctic Shelf

Geosciences, 2019
This paper summarizes current understanding of the processes that determine the dynamics of the subsea permafrost−hydrate system existing in the largest, shallowest shelf in the Arctic Ocean; the East Siberian Arctic Shelf (ESAS).
Natalia Shakhova, Igor Semiletov, Evgeny Chuvilin   +2 more
doaj   +1 more source

Thorncliffe Formation: A proglacial to subglacial lacustrine basin sequence, Greater Toronto Region, Canada

Boreas, EarlyView.
Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe, Charles E. Logan, Ross D. Knight, Andre J.‐M. Pugin   +3 more
wiley   +1 more source