Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US

Details Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..121l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 2, p. 121-124

Physics

Geophysics

7

Anisotropy, Boundaries, Chemical Composition, Earth Mantle, Earth Planetary Structure, New England (Us), Velocity, Anomalies, Geophysics, Seismology, Tomography

Scientific paper

Using teleseismic P wave tomography we detect very large (approx. 5%) variation in the compressional velocity of the upper mantle beneath the Proterozoic-Paleozoic boundary in the Northeastern US. In this region, the uppper mantle is heterogeneous on the 100 km scale to a depth of 300 km. Below this depth, the mantle appears to be laterally homogenous, at least on the scale of 200-250 km. Given the tectonic history of the region, the large amplitude, short wavelength heterogeneities cannot be caused by temperature variations, but may be due to chemical heterogeneity or variations in the amount and orientation of flow-induced seismic anisotropy.

Affiliated with

Also associated with

No associations

Rating

Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous mantle structure at the Proterozoic-Paleozoic boundary in northeastern US will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1821084