Early-Holocene intensified Indian summer monsoon and its impact on vegetation: study based on hydrogen and carbon isotope values in long chain alkane from relict lake sediments in the Central Himalaya

Prasanta Sanyal, Indian Institute of Science Education and Research Kolkata, Department of Earth Sciences, Mohanpur, India, Sambit Ghosh, Indian Institute of Science Education and Research Kolkata, Kolkata, India, Ravi Bhushan, Physical Research Laboratory, Geosciences Division, Ahmedabad, India and Navin Juyal, Physical Research Laboratory, Ahmedabad, India