Details

Autor(en) / Beteiligte

• Kring, David A.
• Tikoo, Sonia M.
• Schmieder, Martin
• Riller, Ulrich
• Rebolledo-Vieyra, Mario
• Simpson, Sarah L.
• Osinski, Gordon R.
• Gattacceca, Jérôme
• Wittmann, Axel
• Verhagen, Christina M.
• Cockell, Charles S.
• Coolen, Marco J. L.
• Longstaffe, Fred J.
• Gulick, Sean P. S.
• Morgan, Joanna V.
• Bralower, Timothy J.
• Chenot, Elise
• Christeson, Gail L.
• Claeys, Philippe
• Ferrière, Ludovic
• Gebhardt, Catalina
• Goto, Kazuhisa
• Green, Sophie L.
• Jones, Heather
• Lofi, Johanna
• Lowery, Christopher M.
• Ocampo-Torres, Rubén
• Perez-Cruz, Ligia
• Pickersgill, Annemarie E.
• Poelchau, Michael H.
• Rae, Auriol S. P.
• Rasmussen, Cornelia
• Sato, Honami
• Smit, Jan
• Tomioka, Naotaka
• Urrutia-Fucugauchi, Jaime
• Whalen, Michael T.
• Xiao, Long
• Yamaguchi, Kosei E.

Titel

Probing the hydrothermal system of the Chicxulub impact crater

Ist Teil von

• Science advances, 2020-05, Vol.6 (22), p.eaaz3053-eaaz3053

Ort / Verlag

American Association for the Advancement of Science (AAAS)

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• The Chicxulub impact event generated a long-duration hydrothermal system suitable for microbial life. The ~180-km-diameter Chicxulub peak-ring crater and ~240-km multiring basin, produced by the impact that terminated the Cretaceous, is the largest remaining intact impact basin on Earth. International Ocean Discovery Program (IODP) and International Continental Scientific Drilling Program (ICDP) Expedition 364 drilled to a depth of 1335 m below the sea floor into the peak ring, providing a unique opportunity to study the thermal and chemical modification of Earth’s crust caused by the impact. The recovered core shows the crater hosted a spatially extensive hydrothermal system that chemically and mineralogically modified ~1.4 × 10 5 km 3 of Earth’s crust, a volume more than nine times that of the Yellowstone Caldera system. Initially, high temperatures of 300° to 400°C and an independent geomagnetic polarity clock indicate the hydrothermal system was long lived, in excess of 10 6 years.