tag:blogger.com,1999:blog-5859094080858570248.post1986775411588905236..comments2024-03-29T13:05:30.522+05:30Comments on Rapid Uplift: The Easterly Tilt Of The Deccan PlateauSuvrat Kherhttp://www.blogger.com/profile/18281172632784780810noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-5859094080858570248.post-46662932313682568192011-10-03T10:53:34.251+05:302011-10-03T10:53:34.251+05:30well.. the coincident time frame would mean the vo...well.. the coincident time frame would mean the volcanism would have had some impact.. but the evidence for a meteorite impact is also quite strong (although Gerta Keller has argued that the Chicxulub impact event occurred about 300,000 years before the iridium rich K-Pg marker) .. so the story may be complicated, multiple causes would be a better answer..Suvrat Kherhttps://www.blogger.com/profile/18281172632784780810noreply@blogger.comtag:blogger.com,1999:blog-5859094080858570248.post-22436320306020634462011-10-02T00:27:11.800+05:302011-10-02T00:27:11.800+05:30Interesting that the date is placed @ 65 Ma, which...Interesting that the date is placed @ 65 Ma, which coincides with the KT boundary. What are your thoughts on the hypothesis that the Deccan basalts were the primary engine for the mass extinction, as opposed to the other events considered?Malcolm V Lhttps://www.blogger.com/profile/00126268490488546890noreply@blogger.comtag:blogger.com,1999:blog-5859094080858570248.post-51674874842920373962011-09-08T21:10:32.896+05:302011-09-08T21:10:32.896+05:30Yes there is a trail of sporadic volcanic occurren...Yes there is a trail of sporadic volcanic occurrences along the west coast and southwards in the Arabian sea and Indian ocean ending at the Reunion islands. That may be according to some experts the precursor to the main phase of Deccan volcanism.<br /><br />the Mulki Pulicat Axis also points to regional tectonic controls on drainage. The Indian crust in this region is undergoing stress and is being uplifted, some of it due to reasons i outlined, some may even be stresses propagated from the Himalayan collision zone.Suvrat Kherhttps://www.blogger.com/profile/18281172632784780810noreply@blogger.comtag:blogger.com,1999:blog-5859094080858570248.post-27154967263849518912011-09-08T18:47:36.985+05:302011-09-08T18:47:36.985+05:30Even if Deccan lavas never flowed that far south, ...Even if Deccan lavas never flowed that far south, but still there are St. Mary’s islands on Arabian Sea (east of Udupi City) which are composed of basaltic columnar volcanic rocks and it is no-where near the deccan zone.<br /><br />Also, along with the easterly tilt of the plateau, there is also a slight north-south tilt along the Mulki Pulicat Axis (Mangalore-Madras Axis). This too has played a role in changing the drainage pattern of Pennar & Kaveri rivers and few westwardly flowing short rivers.Adrian D'Souzahttps://www.blogger.com/profile/13636488467870454895noreply@blogger.comtag:blogger.com,1999:blog-5859094080858570248.post-29767907849663436182011-09-07T16:24:41.827+05:302011-09-07T16:24:41.827+05:30Thanks..Thanks..Adrian D'Souzahttps://www.blogger.com/profile/13636488467870454895noreply@blogger.com