1 / 5

Accretion of Granite-Rhyolite Province ( 1.55-1.35 Ga ) resulting in the Nd line

Accretion of Granite-Rhyolite Province ( 1.55-1.35 Ga ) resulting in the Nd line. Whitmeyer and Karlstrom , 2007. Terranes stitched together by the emplacement of anorogentic granites (1.48-1.35 Ga ) – generation of TIKL?. Whitmeyer and Karlstrom , 2007.

garvey
Download Presentation

Accretion of Granite-Rhyolite Province ( 1.55-1.35 Ga ) resulting in the Nd line

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Accretion of Granite-Rhyolite Province (1.55-1.35 Ga) resulting in the Nd line Whitmeyer and Karlstrom, 2007 • Terranes stitched together by the emplacement of anorogentic granites (1.48-1.35 Ga) – generation of TIKL? Whitmeyer and Karlstrom, 2007

  2. Previous Geophysical Observations Depth integrated magnetic contrasts • Long wavelength magnetization • Change in magnetization aligns with Nd-line • Warm colors  high susceptibility • Cool colors  low susceptibility (Ravat, 2007 ) Full-spectrum magnetic anomaly map • Short wavelength magnetic anomalies • Do magnetic highs mark locations of intrusive events that modified the crust? • Abrupt transition from high to low anomaly marks the TIKL Warm colors  high susceptibility Cool colors  low susceptibility (Ravat et al., 2009)

  3. Crustal modification

  4. OIINK Crustal Thickness

More Related