Sr–Nd–Os evidence for a stable erosion regime in the Himalaya during the past 12Myr

Seasonal variations in the Sr-Nd isotopic compositions of suspended particulate matter in the lower Changjiang River: Provenance and erosion constraints

“…As a result, the Nd-Sr isotopic signatures of the sediments have been useful for identifying their sources and studying erosion processes [2, [26][27][28][29][30]. In addition, the Nd-Sr isotopic signatures of geological time scale sediments have been widely used to probe evolution of the Asian monsoon and the uplift history of Tibetan Plateau [31][32][33][34][35][36][37][38][39]. Several studies of the Nd-Sr isotopic compositions of the CR sediments have recently been conducted [40][41][42].…”

Climate induced temporal change in Sr-Nd isotope ratios in the valley-fill deposits of the Ganga river

“…We also compared Sr and Nd isotopic composition of the Firozpur core sediments with the existing records generated from the Bay of Bengal (France-Lanord et al, 1993;Galy et al, 2008Galy et al, , 2010Colin et al, 1999Colin et al, , 2006 and the Ganga Plain sediments (Rahaman et al, 2009;Agrawal et al, 2013a). France-Lanord et al (1993) investigated variations in the Sr and Nd isotopic ratios in a sediment core from the Bay of Bengal spanning 17 Ma time period and showed that the dominant source of these sediments is the Higher Himalayan Crystallines with lesser contribution from the LH.…”

“…5. Two isotope system plot (after Singh et al, 2008) of 87 Sr/ 86 Sr and εNd in silicates of the Ganga Plain sediments (Rahaman et al, 2009;Agrawal et al, 2013a) and Bay of Bengal sediments (Galy et al, 2010 example, Bookhagen and Burbank (2006) showed that modern erosion rates over the HH and LH are strongly dependent on rainfall amount with two rainfall maxima along strike of the Himalaya, one at the southern margin of the LH and another at the rising limb of the HH. Erosion rate at latter place is much higher due to its higher elevation and steep gradient.…”

“…Further, France-Lanord et al (1993) suggested that the source of sediments remained nearly constant during last 17 Ma. Galy et al (2010) have analyzed the Sr and Nd isotopic composition of sediments deposited in the deep Bengal Fan spanning 12 Ma time period which range from 0.7163 to 0.7526 and -10.7 to -16.5, respectively. On the basis of these values Galy et al (2010) suggested that the sediments of the deep Bengal Fan were mainly derived from the High Himalaya Crystallines with subsidiary contributions from the Trans-Himalayan batholiths and LH.…”

“…The sediments of the Bay of Bengal have been studied to understand past Himalayan erosion history and their causative factors in million as well as millennial scale (France-Lanord et al, 1993;Colin et al, 1999;PiersonWickmann et al, 2001;Ahmad et al, 2005;Galy et al, 2010). Such studies suggest that the sediments derived from the Higher Himalaya (HH) and Lesser Himalaya (LH) has varied with time under the influence of climate and tectonics.…”