downthrow

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downthrow

[′dau̇n‚thrō]
(geology)
The side of a fault whose relative movement appears to have been downward.
References in periodicals archive ?
The well was drilled to test a downthrown anticline and was an offset to Newfield's 2008 oil discovery - the LF 7-2.
Hole JSD-12 was also not able to intercept the "Bird's Eye" porphyry encountered in TSD-67 due to an inferred fault zone which appears to have downthrown the mineralization.
The borehole intersected a zone of tectonic brecciation and shearing that separates Ordovician metasedimentary rocks and downthrown Tertiary volcanic rocks at 1,504-1,534 ft (456-465 m).
The Triple Crown Field is one of several downthrown fault blocks adjacent to Brigham's 1999 Home Run Field discovery.
This activity is highly noteworthy, not only due to its extremely close proximity to the Rock acreage, but also its validation of high productivity wells on the downthrown side of the Bob West structure fault block where Rock's acreage is located.
1 well was drilled as an exploratory test of one of several downthrown fault blocks adjacent to Brigham's Home Run Field in its Diablo 3-D Seismic Project in Brooks County, Texas.
The results from both phases of drilling are currently being studied and will further define the favorable areas for mineralization on the downthrown eastern flank of the Lisbon Valley Anticline.
Exploratory Offset to Home Run Field -- Brigham recently spud a 14,500 foot test of a downthrown fault block offsetting its Home Run Field discovery.
The OCS G 22738 #1 well drilled at Ship Timbalier block 75, was drilled to a total depth of 14,650 feet and encountered 150 net feet of hydrocarbons pay in six commercial reservoirs in the downthrown fault block.
The prospect is a downthrown anticlinal structure encompassing approximately 1,200 acres at the first Wilcox sand.
Tuscaloosa Prospect #2 is a rollover anticline in a downthrown fault block at 6,550 feet.
The upcoming well will assess the extent and hydrocarbon contacts of the downthrown fault block.