TY - JOUR
T1 - Crustal structure of the Chicxulub Impact crater imaged with magnetotelluric exploration
AU - Unsworth, Martyn J.
AU - Campos Enriquez, Oscar
AU - Belmonte, Salvador
AU - Arzate, Jorge
AU - Bedrosian, Paul A.
PY - 2002/8/15
Y1 - 2002/8/15
N2 - The electrical resistivity structure of the Chicxulub Impact crater has been imaged using broadband magnetotelluric exploration. A 1-2 km thick sequence of conductive Tertiary sedimentary rocks was imaged within the crater. The shallow resistivity of this layer increases across the cenote ring. This is primarily due to a decrease in porosity, although the groundwater composition may have some effect. While this layer reduces the sensitivity of MT, several features can be discerned beneath it. In the center of the crater the structural high is imaged as a region of high resistivity. In the outer part of the crater, lower resistivities in the upper crust may be due to mineralization or hydrothermal alteration.
AB - The electrical resistivity structure of the Chicxulub Impact crater has been imaged using broadband magnetotelluric exploration. A 1-2 km thick sequence of conductive Tertiary sedimentary rocks was imaged within the crater. The shallow resistivity of this layer increases across the cenote ring. This is primarily due to a decrease in porosity, although the groundwater composition may have some effect. While this layer reduces the sensitivity of MT, several features can be discerned beneath it. In the center of the crater the structural high is imaged as a region of high resistivity. In the outer part of the crater, lower resistivities in the upper crust may be due to mineralization or hydrothermal alteration.
UR - http://www.scopus.com/inward/record.url?scp=0242600711&partnerID=8YFLogxK
U2 - 10.1029/2002GL014998
DO - 10.1029/2002GL014998
M3 - Artículo
SN - 0094-8276
VL - 29
SP - 35-1-35-4
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 16
ER -