scholarly journals Sedimentology and the facies architecture of the Ghaggar-Hakra Formation, Barmer Basin, India: Implications for early Cretaceous deposition on the north-western Indian Plate margin

2018 ◽  
Vol 5 (1) ◽  
pp. 53-83
Author(s):  
Hazel Beaumont ◽  
Stuart M. Clarke ◽  
Stuart D. Burley ◽  
Andrew M. Taylor ◽  
Pinakadhar Mohapatra
Keyword(s):  
Early Cretaceous ◽  
Indian Plate ◽  
Facies Architecture ◽  
The North ◽  
Plate Margin ◽  
Barmer Basin ◽  
North Western

The Paraná magmatism (Brazil) as the villain regarding the remagnetization of the Paleozoic sediments in the basin – half-truth!

2021 ◽  
Author(s):  
M. Irene B. Raposo ◽  
Marcia Ernesto ◽  
Daniele Brandt ◽  
Daniel Ribeiro Franco
Keyword(s):  
Early Cretaceous ◽  
Clay Content ◽  
Time Interval ◽  
Magnetic Mineralogy ◽  
Geomagnetic Reversal ◽  
Sedimentary Sequences ◽  
The North ◽  
Intrusive Rocks ◽  
Western Portion ◽  
North Western

<p>The sedimentation in the Paraná Basin started during the Ordovician and ended with the Early Cretaceous magmatic event. Thick lava pilescovered the entire basin, and voluminous dikes and sills occur in the sedimentary sequences, mainly in the northeastern border of the basin. Despite the thermal effect, some Paleozoic sedimentary formations preserved their primary magnetization. The paleomagnetic results from the glacial Aquidauana Formation, an equivalent to the Itararé group in the north-western portion of the basin, indicated that the magnetization is compatible with the Middle-Late Permian age assigned in literature. A detailed investigation of the magnetic mineralogy and the magnetization of other Paleozoic sedimentary rocks led to the conclusion that the intrusive rocks were more effective than the lavas in disturbing the primary magnetization, especially in the low-clay content rocks. The secondary magnetizations identified in the different areas of the basin are not always compatible with the Early Cretaceous magnetization imprinted by the Paraná magmatism. This component prevails in the northeastern area, while a Permo-Triassic magnetization was identified in other areas. The results obtained so far are coherent with the geomagnetic reversal scale for the considered time interval, and the paleomagnetic poles agree with the APWP for South America.</p>

U-Pb on Zircon and Monazite Geochronology of Granites of the Zhytomyr and Sheremetiv Complexes, the North-Western Region of the Ukrainian Shield

2018 ◽  
Vol 40 (2) ◽  
pp. 63-85 ◽  
Author(s):  
L. Shumlyanskyy ◽  
L. Stepanyuk ◽  
S. Claesson ◽  
K. Rudenko ◽  
A. Bekker
Keyword(s):  
Ukrainian Shield ◽  
Western Region ◽  
The North ◽  
North Western

Assessment of the Reactions of Algal Communities to Influence of Climatic Factors in the North-Western Black Sea Ecosystem

2018 ◽  
Vol 20 (2) ◽  
pp. 121-134 ◽  
Author(s):  
G. G. Minicheva ◽  
V. N. Bolshakov ◽  
E. S. Kalashnik ◽  
A. B. Zotov ◽  
A. V. Marinets
Keyword(s):  
Black Sea ◽  
Climatic Factors ◽  
Algal Communities ◽  
The North ◽  
North Western
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