THE NILI PATEA CALDERA; EVOLVING MAGMAS, EXPLOSIVE ERUPTIONS AND HYDROTHERMAL DEPOSITS ON MARS. P. Fawdon
نویسندگان
چکیده
HYDROTHERMAL DEPOSITS ON MARS. P. Fawdon *1 , J. R. Skok 2 , M.R. Balme 1 , C. Vye-Brown 3 , D.A. Rothery 1 ,C. J. Jordan 4 1 Department of Physical Sciences, The Open University, Walton Hall, Milton Keynes, UK. MK7 6AA; [email protected], 2 Department of Geology & Geophysics, Louisiana State University, Baton Rouge, LA 70803., 3 British Geological Survey, Murchison House, West Mains Road, Edinburgh, UK. EH9 3LA, 4 British Geological Survey, Nicker Hill Keyworth, Nottingham UK. NG12 5GG
منابع مشابه
Magma storage in a strike-slip caldera
Silicic calderas form during explosive volcanic eruptions when magma withdrawal triggers collapse along bounding faults. The nature of specific interactions between magmatism and tectonism in caldera-forming systems is, however, unclear. Regional stress patterns may control the location and geometry of magma reservoirs, which in turn may control the spatial and temporal development of faults. H...
متن کاملMonitoring super-volcanoes: geophysical and geochemical signals at Yellowstone and other large caldera systems.
Earth's largest calderas form as the ground collapses during immense volcanic eruptions, when hundreds to thousands of cubic kilometres of magma are explosively withdrawn from the Earth's crust over a period of days to weeks. Continuing long after such great eruptions, the resulting calderas often exhibit pronounced unrest, with frequent earthquakes, alternating uplift and subsidence of the gro...
متن کاملPhreatic eruptions and deformation of Ioto Island (Iwo-jima), Japan, triggered by deep magma injection
On Ioto Island (Iwo-jima), 44 phreatic eruptions have been recorded since 1889, when people began to settle there. Four of these eruptions, after the beginning of continuous observation by seismometers in 1976, were accompanied by intense seismic activity and rapid crustal deformation beforehand. Other eruptions on Ioto were without obvious crustal activities. In this paper, we discuss the mech...
متن کاملTurmoil at Turrialba Volcano (Costa Rica): Degassing and eruptive processes inferred from high‐frequency gas monitoring
Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volc...
متن کاملCo2 –driven Hydrothermal Eruptions in Geothermal Systems of Turkey
Substantial CO2 degassing occurs from geothermal waters in Turkey as evident from ongoing deposition of recent terrace travertines and emplacement of significant travertine vein and breccia deposits representing hydrothermal eruption products. Geochemical data indicate rapid ascent of CO2bearing fluids without significant interaction with basement and host rocks. High-precision U-series dates o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014