Demonstration of two pulses of Paleogene deformation in the Andes of Peru

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

3

Scientific paper

New radiometric ages of about 25 m.y. on volcanic materials in a marine intercalation within clastic continental strata of the Upper Moquegua Formation near Caraveli, southern Peru, together with an age of 25.3 +/- 0.4 m.y obtained by Tosdal et al. from a locality about 300 km to the ESE, show that the formation contains strata of late Oligocene as well as Miocene age, and demonstrate that the coastal region was at a low elevation during latest Oligocene time. Because the unconformities between the Upper Moquegua Formation and the underlying Lower Moquegua Formation, and between the Lower Moquegua Formation and underlying Paleocene rocks cannot both represent the same tectonic event, two discrete Paleogene events must be present in the Andes of Peru. Although the exact timing of these events is uncertain, the unconformities are likely to be of Paleocene and middle Eocene age or possibly of middle Eocene and Oligocene age.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Demonstration of two pulses of Paleogene deformation in the Andes of Peru 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 Demonstration of two pulses of Paleogene deformation in the Andes of Peru, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demonstration of two pulses of Paleogene deformation in the Andes of Peru will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1631829

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.