****************************** Sulphur flow at Poas Volcano ****************************** From: Eliecer Duarte Gonzalez <eduarte@xxxxxxxxx> Sulphur Flow (160m long) documented at Poás Volcano, Costa Rica. June 2, 2006 During a visit to the active crater area of Poas Volcano, a 160m in length sulphur flow was documented. Elementary sulphur has concentrated, since last year, at the base of the main NE fumaroles. In the process, most of the E and NE inner walls show a bright yellow appearance. One of the sulphur ponds (fumarole C) collapsed partially spilling a considerable amount of molten sulphur that travelled down one of the small drainages. Thickness of such flow vary from 5 to 15cm although some superelevations marks, reached up to 25cm. Most of the flow shows a pahoe hoe texture and its color varies from bright to dark yellow, due to impurities from mud and sediments. Despite the elongated flow, small levees were observed at the very end of it reaching as far as few meters from the hot acidic lake. Visual information can be found at http://www.ovsicori.una.ac.cr/ ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
