REE geochemistry of the recent playa sediments from the Thar Desert, India: An implication to playa sediment provenance

Geochemical signatures of Late Holocene paleo-hydrological changes from Phulera and Pokharan saline playas near the eastern and western margins of the Thar Desert, India

“…200 km west of the Aravalli Mountains. An earlier petrographic and mineralogical study by Roy and Smykatz-Kloss (2007) indicated the presence of well rounded fragments of mica schist, gneiss and quartzite, and angular fragments of basalt and rhyolite in the sediments of the Pokharan basin. This suggests that Pokharan basin received sediments from the Aravalli Mountains with additional inputs from nearby basalt, rhyolite and sandstone.…”

Geochemistry of rare earth elements in soils under different land uses in a typical karst area, Guizhou Province, Southwest China

“…The powdered samples were then dried in an oven at 105°C for 3 h before digestion. The methods used to digest the sample powders are as follows (Roy and Smykatz-Kloss, 2007;Tang et al, 2015): 1) 100 mg sample powder was digested with 1 ml HF and 2 ml HNO 3 in a PFA sample jar (Savillex, US) at 140 °C for 7 d.…”

Geochemical characteristics of insoluble dust as a tracer in an ice core from Miaoergou Glacier, east Tien Shan

“…To a certain extent, LREE/HREE ratios could reflect the fractionation degree of REEs. In addition, (La/Sm) N and (Gd/Yb) N values were taken as indicating the degree of chemical weathering (Roy and Smykatz-Kloss, 2007). δEu and δCe cannot only indicate the sedimentary environment, but they can also reflect the source rock characteristics (Zhang, 1997).…”