tag:blogger.com,1999:blog-3319786799012800176.post1176495917899679463..comments2023-10-13T03:51:03.655-04:00Comments on Magma Cum Laude: Volcano Vocab #4: LaharJessica Ballhttp://www.blogger.com/profile/13117925212295349320noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-3319786799012800176.post-77608189508201576172010-05-08T11:06:31.655-04:002010-05-08T11:06:31.655-04:00You have caused me to look up all kinds of pyrocla...You have caused me to look up all kinds of pyroclastic-related terms, and I'll now have links for my May 18th post (including this post). :)Silver Foxhttps://www.blogger.com/profile/03131032620978696727noreply@blogger.comtag:blogger.com,1999:blog-3319786799012800176.post-88611364571146917572010-05-07T20:42:36.553-04:002010-05-07T20:42:36.553-04:00I suspect what happens (since I haven't observ...I suspect what happens (since I haven't observed it directly) is that the pyroclastic flow loses momentum and sediments into the stream. (It might transfer some energy and push the water ahead of it, too.)Jessica Ballhttps://www.blogger.com/profile/13117925212295349320noreply@blogger.comtag:blogger.com,1999:blog-3319786799012800176.post-87599840528240358072010-05-07T19:23:09.408-04:002010-05-07T19:23:09.408-04:00Wonderful post, thanks. I'm in fluvial geomor...Wonderful post, thanks. I'm in fluvial geomorph and went many years without even hearing this term until GSA Portland, where it was around every corner! Still fuzzy on where the water comes from, other than melting ice/snow. How does it "get wet?"Anonymoushttps://www.blogger.com/profile/16066285550739882631noreply@blogger.comtag:blogger.com,1999:blog-3319786799012800176.post-29473083357577675232010-05-07T11:37:33.119-04:002010-05-07T11:37:33.119-04:00It doesn't necessarily have to; lahars can for...It doesn't necessarily have to; lahars can form from hydrothermally altered material (big risk in the Cascades) and old deposits as well. It's not unusual for a pyroclastic flow to get funneled into a river valley, get wet and turn into a lahar, though.Jessica Ballhttps://www.blogger.com/profile/13117925212295349320noreply@blogger.comtag:blogger.com,1999:blog-3319786799012800176.post-84079817561748620162010-05-07T11:05:35.812-04:002010-05-07T11:05:35.812-04:00Is a lahar supposed to contain primary volcanic ma...Is a lahar supposed to contain primary volcanic material - material from a current eruption? Or does that make it more like a lahar + ash flow or lava mix of some sort?Silver Foxhttps://www.blogger.com/profile/03131032620978696727noreply@blogger.com