scholarly journals Provenance, Depositional and Diagenetic Reconstruction of the Early Palaeozoic Succession in Kupwara District, Kashmir, North-western Himalaya

2021 ◽  
Vol 38 (2) ◽  
pp. 101-114
Author(s):  
Ashaq Hussain Bhat ◽  
S K Pandita ◽  
H N Sinha ◽  
Bindra Thusu ◽  
Ahsan Ul Haq
Keyword(s):  
Depositional Environment ◽  
Western Himalaya ◽  
Energy Conditions ◽  
Carbonate Precipitation ◽  
Jammu And Kashmir ◽  
Early Palaeozoic ◽  
Diagenetic History ◽  
Siliciclastic Sediments ◽  
North Western ◽  
Mixed Nature

Early Palaeozoic succession in Kupwara district of Jammu and Kashmir, North-western Himalaya comprise of sandstone, shale, carbonates and slate. The petrological properties of these rocks were used to work out the provenance, depositional environment and their diagenetic history. The siliciclastic sediments with interbedded carbonate rocks indicate shifts in sea level and consequent changes in energy conditions of the basin as well as biogenic interferences leading to carbonate precipitation in a shallow marine depositional environment. Provenance of these rocks has been of mixed nature with monocrystalline quartz dominant in sandstones indicating greater contribution from igneous sources.  

scholarly journals REE and Sr–Nd Isotope Characteristics of Cambrian–Ordovician Carbonate in Taebaek and Jeongseon Area, Korea

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 326
Author(s):  
Tae-Hyeon Kim ◽  
Seung-Gu Lee ◽  
Jae-Young Yu
Keyword(s):  
Depositional Environment ◽  
Sea Water ◽  
Geological Time ◽  
Nd Isotope ◽  
Diagenetic Processes ◽  
Platform Margin ◽  
Carbonate Formations ◽  
Diagenetic History ◽  
Cretaceous Period ◽  
Ree Patterns

Carbonate formations of the Cambro-Ordovician Period occur in the Taebaek and Jeongseon areas, located in the central–eastern part of the Korean Peninsula. This study analyzed the rare earth element (REE) contents and Sr–Nd isotope ratios in these carbonates to elucidate their depositional environment and diagenetic history. The CI chondrite-normalized REE patterns of the carbonates showed negative Eu anomalies (EuN/(SmN × GdN)1/2 = 0.50 to 0.81), but no Ce anomaly (Ce/Ce* = CeN/(LaN2 × NdN)1/3 = 1.01 ± 0.06). The plot of log (Ce/Ce*) against sea water depth indicates that the carbonates were deposited in a shallow-marine environment such as a platform margin. The 87Sr/86Sr ratios in both Taebaek and Jeongseon carbonates were higher than those in the seawater at the corresponding geological time. The 87Sr/86Sr ratios and the values of (La/Yb)N and (La/Sm)N suggest that the carbonates in the areas experienced diagenetic processes several times. Their 143Nd/144Nd ratios varied from 0.511841 to 0.511980. The low εNd values and high 87Sr/86Sr ratios in the carbonates may have resulted from the interaction with the hydrothermal fluid derived from the intrusive granite during the Cretaceous Period.

Decadal Terminus Position Changes and Ice Thickness Measurement of Menthosa Glacier in Lahaul Region of North-Western Himalaya

2021 ◽  
pp. 1-17
Author(s):  
Satya Prakash ◽  
Milap Chand Sharma ◽  
S. Sreekesh ◽  
Pritam Chand ◽  
Vijendra Kumar Pandey ◽  
...  
Keyword(s):  
Western Himalaya ◽  
Thickness Measurement ◽  
Ice Thickness ◽  
North Western

Rottboellia husainii (Poaceae: Andropogoneae), a new grass species from Western Himalaya, India

Phytotaxa ◽  
2021 ◽  
Vol 507 (1) ◽  
pp. 98-104
Author(s):  
SHAILJA TRIPATHI ◽  
SHUBHAM JAISWAL ◽  
DILESHWAR PRASAD ◽  
REKHA YADAV ◽  
GAURI SAXENA ◽  
...  
Keyword(s):  
New Species ◽  
Western Himalaya ◽  
Grass Species ◽  
Jammu And Kashmir ◽  
Taxonomic Key ◽  
A New Species

A new species of Rottboellia (Poaceae), R. husainii is described from Rakh Jargoh village in Ramban district of Jammu and Kashmir, India. The species is closely allied to R. cochinchinensis in possessing similar habit and inflorescence but differs in certain characters, which are discussed below. A detailed description, photographs and taxonomic key are provided for easy identification of the species in India.

Hydrological Modelling in North Western Himalaya

2018 ◽  
pp. 109-138
Author(s):  
S. P. Aggarwal ◽  
Vaibhav Garg ◽  
Praveen K. Thakur ◽  
Bhaskar R. Nikam
Keyword(s):  
Western Himalaya ◽  
Hydrological Modelling ◽  
North Western
Sign in / Sign up

Export Citation Format

Share Document