Late Cenozoic history of the interior basins of Alaska and the Yukon

Circular ◽  
1989 ◽  
Keyword(s):  
Late Cenozoic ◽  
History Of

scholarly journals Late Cenozoic Denudation and Topographic Evolution History of the Lhasa River Drainage in Southern Tibetan Plateau: Insights From Inverse Thermal History Modeling

2021 ◽  
Vol 9 ◽  
Author(s):  
Dongxu Cai ◽  
Xianyan Wang ◽  
Guangwei Li ◽  
Wenbin Zhu ◽  
Huayu Lu
Keyword(s):  
Tibetan Plateau ◽  
Surface Erosion ◽  
The Tibetan Plateau ◽  
Monsoon Precipitation ◽  
Late Cenozoic ◽  
River Drainage ◽  
History Of ◽  
Southern Tibetan Plateau ◽  
Lhasa River ◽  
Topographic Evolution

The interaction of surface erosion (e.g., fluvial incision) and tectonic uplift shapes the landform in the Tibetan Plateau. The Lhasa River flows toward the southwest across the central Gangdese Mountains in the southern Tibetan Plateau, characterized by a low-relief and high-elevation landscape. However, the evolution of low-relief topography and the establishment of the Lhasa River remain highly under debate. Here, we collected thermochronological ages reported in the Lhasa River drainage, using a 3D thermokinematic model to invert both late Cenozoic denudation and relief history of the Lhasa River drainage. Our results show that the Lhasa River drainage underwent four-phase denudation history, including two-stage rapid denudation at ∼25–16 Ma (with a rate of ∼0.42 km/Ma) and ∼16–12 Ma (with a rate of ∼0.72 km/Ma). In the latest Oligocene–early Miocene, uplift of the Gangdese Mountains triggered the rapid denudation and the formation of the current main drainage of the Lhasa River. In the middle Miocene, the second stage of the rapid denudation and the high relief were associated with intense incision of the Lhasa River, which is probably due to the enhanced Asian summer monsoon precipitation. This later rapid episode was consistent with the records of regional main drainage systems. After ∼12 Ma, the denudation rate decreases rapidly, and the relief of topography in the central Gangdese region was gradually subdued. This indicates that the fluvial erosion resulting from Asian monsoon precipitation increase significantly impacts on the topographic evolution in the central Gangdese region.

scholarly journals Late Cenozoic Foreland‐to‐Hinterland Low‐Temperature Exhumation History of the Kashmir Himalaya

Tectonics ◽  
2018 ◽  
Vol 37 (9) ◽  
pp. 3041-3068 ◽  
Author(s):  
Yann Gavillot ◽  
Andrew J. Meigs ◽  
Francis J. Sousa ◽  
Daniel Stockli ◽  
Doug Yule ◽  
...  
Keyword(s):  
Low Temperature ◽  
Kashmir Himalaya ◽  
Late Cenozoic ◽  
History Of ◽  
Exhumation History

Lithostratigraphy and depositional history of the Late Cenozoic hominid-bearing successions in the Yuanmou Basin, southwest China

2001 ◽  
Vol 20 (15) ◽  
pp. 1671-1681 ◽  
Author(s):  
Atsushi Urabe ◽  
Hideo Nakaya ◽  
Tetsuji Muto ◽  
Shigehiro Katoh ◽  
Masayuki Hyodo ◽  
...  
Keyword(s):  
Southwest China ◽  
Late Cenozoic ◽  
Depositional History ◽  
History Of

Sedimentary cover and late Cenozoic history of the Okushiri Ridge (Sea of Japan)

2011 ◽  
Vol 19 (6) ◽  
pp. 663-678 ◽  
Author(s):  
N. G. Vashchenkova ◽  
M. T. Gorovaya ◽  
A. V. Mozherovskii ◽  
I. B. Tsoy
Keyword(s):  
Sea Of Japan ◽  
Sedimentary Cover ◽  
Late Cenozoic ◽  
History Of

Thermochronological constraints on the Late Cenozoic evolution of the northeastern Pamir

2020 ◽  
Author(s):  
Shenqiang Chen
Keyword(s):  
Channel Flow ◽  
Average Rate ◽  
Late Cenozoic ◽  
Data Set ◽  
Tectonic Processes ◽  
History Of ◽  
Kongur Shan ◽  
Geodynamic Models ◽  
Exhumation History ◽  
East West

<p>Situated at the northwestern end of the India–Asia collision zone, the northeastern Pamir is an important area to explore intracontinental tectonic processes and geodynamic models. In this study, thermochronology is applied to constrain the Late Cenozoic exhumation history of the northeastern Pamir. A new thermochronological data set, combined with previous thermochronological data, suggests that (1) the Late Cenozoic exhumation of the northeastern Pamir began at ~22–18 Ma; (2) the strong crustal contraction in the hinterland of the northeastern Pamir occurred during ~13–10 Ma and ~8–6 Ma; and (3) the east-west extension along the Kongur Shan dome initiated at ~5–3 Ma, and it has resulted in the exhumation of the core of the dome with an average rate of ~2–4 mm/a. I propose that (1) the Early Miocene exhumation of the northeastern Pamir is related to the initiation of the Main Pamir thrust; (2) the first and second stages of the strong crustal contraction are respectively correlated with the northward propagation of the crustal channel flow in the northeastern Pamir and the initial collision between the northeastern Pamir and the Tian Shan; and (3) the east-west extension is driven by the extrusion of the ductile channel flow.</p>

scholarly journals Evolution of Quaternary river terraces related to the uplift of the central part of the Bohemian Massif

Geografie ◽  
2008 ◽  
Vol 113 (3) ◽  
pp. 205-222
Author(s):  
Břetislav Balatka ◽  
Jan Kalvoda
Keyword(s):  
Bohemian Massif ◽  
Fluvial Sediments ◽  
Relative Height ◽  
Late Cenozoic ◽  
Fluvial Terraces ◽  
River Terraces ◽  
Uplift Rates ◽  
History Of ◽  
River Valleys ◽  
Geomorphological Analysis

Fluvial sediments in the Vltava, Berounka, Sázava and Labe valleys are preserved as extensive river terrace sequences. These accumulation terraces originated from an interaction of climate-morphogenetic and neotectonic processes in the late Cenozoic. The palaeogeographical history of the central part of the Bohemian Massif is described. Geomorphological analysis of late Cenozoic fluvial sediments preserved in the Bohemian Massif confirm that in total 7 main terrace accumulations with several secondary levels can be differentiated. A chronostratigraphical scheme of erosion and accumulation periods and their relations to variable uplift rates in the late Cenozoic is suggested. The relative height of the oldest fluvial terraces above the present-day bottoms of river valleys is more than 100 m which indicates the approximate depth of erosion in the Quaternary.

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