Journal
JOURNAL OF ASIAN EARTH SCIENCES
Volume 157, Issue -, Pages 235-244Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jseaes.2017.08.026
Keywords
Paleomagnetism; Sighbhum Craton; Mafic dykes; India-Baltica-North China Cratons
Categories
Funding
- CSIR-SRF funds [P-81-101]
- CSIR-NGRI
Ask authors/readers for more resources
We report the first key paleopole as a result of paleomagnetic study on a precisely dated 1765.3 +/- 1.0 Ma WNW-ESE trending dyke swarm from Singhbhum Craton. This pole has been used in this study to propose the paleogeographic reconstruction of India with Baltica Craton and North China Craton. Incremental alternating field (AF) and thermal demagnetization, isolated high coercivity components with north to north-westerly declination and shallow negative inclination from 9 sampling sites which are representing different individual dykes. The primary origin of the ChRM is supported by the positive baked contact test. The WNW-ESE trending dykes yield a mean paleomagnetic direction with a declination = 329.2 degrees and an inclination = -22.8 degrees (k = 31.6; alpha 95 = 9.3 degrees). The positive bake contact test proves the primary nature of remanence. The pole position of Singhbhum Craton at 1765 Ma is 45 degrees N, 311 degrees E (dp = 5.2 and dm = 9.9). Paleogeographic reconstruction at ca. 1770 Ma, supported by geological, tectonic and metallogenic evidences indicate that the Baltica Craton and India linkage can be stable for at least similar to 370 Ma (similar to 1770-1400 Ma). There is also reasonable evidence in support of India-North China Craton spatial proximity at similar to 1770 Ma.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available