Bose S.,Presidency University of India |
Das K.,Hiroshima University |
Torimoto J.,Project Genesis |
Arima M.,Yokohama National University |
Dunkley D.J.,Curtin University Australia
High-grade para- and orthogneissic rocks near the Chilka Lake granulite complex, northern part of the Eastern Ghats Belt show complex structural and petrological history. Based on field and petrographic characters, five (M1-M5) metamorphic events could be identified. The earliest metamorphic event (M1) produced amphibolite grade mineral assemblage which produced the peak granulite (M2) assemblages at 900-950°C, 8.5-9.0kbar. The third metamorphic event caused decompression of the deeper crust up to 700-800°C, 6.0-6.5kbar. This was followed by cooling (M4) and subsequent thermal overprinting (M5). Fluid-composition during M3 was dominated by high-density CO2 and changed to low-density mixed CO2-H2O during the M3. Zircon U-Pb SHRIMP data suggest 781±9Ma age for M3 event. Texturally constrained monazite U-Th-Pb EPMA data, on the other hand, yield a group age of 988±23Ma from grain interior, which can signifies the age of M2 event. Few spots with younger dates in the range of 550-500Ma are also noted. This interpretation changes the existing tectonothermal history of northern Eastern Ghats Belt. Our data show that the two adjacent crustal domains of the Eastern Ghats Belt show distinctly contrasting Neoproterozoic histories. While the central Domain 2 evolved through early anticlockwise P-T path culminating in ultrahigh temperature, the northern Domain 3 evolved through a clockwise P-T path. It appears that the Domain 3 was contiguous to East Antarctica and became part of the Eastern Ghats Belt during the assembly of Gondwana. The ca. 780Ma decompression event in the northern Eastern Ghats Belt opens up new possibilities for interpreting the breakup of Rodinia. © 2016 Elsevier B.V. Source
Campus Crusade for Christ Inc. and Project Genesis | Date: 1980-01-22
EDUCATIONAL MOTION PICTURE FILMS, FILM STRIPS, AUDIO CASSETTES, AND PHONOGRAPH RECORDS. PRINTED PUBLICATIONS OF A RELIGIOUS AND RELIGIOUS EDUCATIONAL NATURE-NAMELY, DISCUSSION GUIDES AND DESCRIPTIVE TEXTS.
Project Genesis | Date: 1981-01-20
EDUCATIONAL MATERIAL-NAMELY, MOTION PICTURE FILMS, FILM STRIPS, AUDIO CASSETTES AND RECORDS CONCERNING BIBLICAL AND RELIGIOUS STUDIES. BIBLICAL AND RELIGIOUS PUBLICATIONS-NAMELY, MAGAZINES, TEACHERS GUIDES AND DISCUSSION GUIDES.
Project Genesis | Date: 1979-01-02
EDUCATIONAL MATERIALS-NAMELY, MOTION PICTURE FILMS, FILM STRIPS, AUDIO CASSETTES AND RECORDS, AND CORRESPONDING DISCUSSION GUIDES FOR THESE FILMS, CASSETTES AND RECORDS. PRINTED PUBLICATIONS OF A RELIGIOUS AND RELIGIOUS EDUCATIONAL NATURE, INCLUDING DISCUSSION GUIDES AND DESCRIPTIVE TEXTS.