TY - JOUR
T1 - Magnetic ages of some Indian laterites
AU - Schmidt, P. W.
AU - Prasad, Vanka
AU - Ramam, P. K.
PY - 1983
Y1 - 1983
N2 - The results of an extensive palaeomagnetic investigation of laterites from peninsular India are described. From 62 samples, 693 specimens were step-wise thermally demagnetised to eliminate secondary magnetisations. The ages of laterite formation were estimated after calculation of pole positions from site mean directions and comparison with the Mesozoic-Tertiary apparent polar wander path (APWP) for India. The high-altitude laterites have undergone a complex magnetic history during the late Cretaceous and early Tertiary. The low-altitude laterites are mid- to late Tertiary in age. A fundamental mechanism in laterite formation and preservation is suggested. When the Indian laterite results are compared with those from Australia, they are seen to be consistent with the relative timing of the northward drift of India and Australia.
AB - The results of an extensive palaeomagnetic investigation of laterites from peninsular India are described. From 62 samples, 693 specimens were step-wise thermally demagnetised to eliminate secondary magnetisations. The ages of laterite formation were estimated after calculation of pole positions from site mean directions and comparison with the Mesozoic-Tertiary apparent polar wander path (APWP) for India. The high-altitude laterites have undergone a complex magnetic history during the late Cretaceous and early Tertiary. The low-altitude laterites are mid- to late Tertiary in age. A fundamental mechanism in laterite formation and preservation is suggested. When the Indian laterite results are compared with those from Australia, they are seen to be consistent with the relative timing of the northward drift of India and Australia.
UR - http://www.scopus.com/inward/record.url?scp=0020899514&partnerID=8YFLogxK
U2 - 10.1016/0031-0182(83)90102-5
DO - 10.1016/0031-0182(83)90102-5
M3 - Article
AN - SCOPUS:0020899514
SN - 0031-0182
VL - 44
SP - 185
EP - 202
JO - Palaeogeography, Palaeoclimatology, Palaeoecology
JF - Palaeogeography, Palaeoclimatology, Palaeoecology
IS - 3-4
ER -