Positive europium anomaly at the Permo-Triassic boundary, Spiti, India

Details Positive europium anomaly at the Permo-Triassic boundary, Spiti, India Positive europium anomaly at the Permo-Triassic boundary, Spiti, India

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1531b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 15, Aug. 3, 1992, p. 1531-1534.

Other

6

Europium, Geochemistry, Limestone, Shales, Cerium, India, Magnetic Anomalies, Valleys

Scientific paper

A limonitic layer at the base of the Otoceras-Ophiceras zone in the Lalung section in Spiti valley shows a significant positive europium anomaly with a maximum of 1.9. This layer defines the contact between the earliest Griesbachian and the Permian Productus shale sequence. The layer shows a small cerium anomaly having the maximum value of (Ce/La)N = 1.4. The iridium concentration in this layer, at 73 pg/g, is only marginally above the levels found in the adjacent shales although higher than that found in the overlying limestones. Another horizon having 114 pg/g of Ir occurs 70 cm below this limonitic layer in the shale sequence. These observations have important implications, both for the terrestrial (mainly volcanic) and extraterrestrial impact hypotheses for the Permo-Triassic transition which are discussed.

Affiliated with

Also associated with

No associations

Rating

Positive europium anomaly at the Permo-Triassic boundary, Spiti, India 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 Positive europium anomaly at the Permo-Triassic boundary, Spiti, India, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive europium anomaly at the Permo-Triassic boundary, Spiti, India will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1166825