Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event

Details Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998geo....26..447a&link_type=abstract

Geology, vol. 26, Issue 5, p.447

Mathematics

Logic

45

Scientific paper

New U-Pb geochronologic data from the Sudbury structure directly link extensive hydrothermal activity in crater-fill breccias with the 1850 Ma impact event, and constrain complex impact-induced processes to <4 m.y. Semiconformable alteration of breccias in the Onaping Formation includes silicification, albitization, chloritization, calcitization, and complex feldspathization, which directly underlies Zn-Cu-Pb ore deposits. Geochronologic data demonstrate a middle to lower crustal source for the crater-fill deposit that was subsequently affected by the hydrothermal event at 1848.4 +3.8/-1.8 Ma. These and other data confirm that the crater-fill breccia, hydrothermal system, Sudbury igneous complex, and its sublayer Ni-ore-bearing units were emplaced as a result of impact. The ages of events associated with the Sudbury structure are now more closely constrained than in any other meteorite impact structure.

Affiliated with

Also associated with

No associations

Rating

Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event 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 Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dating of a regional hydrothermal system induced by the 1850 Ma Sudbury impact event will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1369100