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Geosource>Ajhil at 10:16, 25 April 2018

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{{OR/16/034}}
Two major faults with significant throws are present in Area 9, the Birmingham Fault and the Dicken’s Heath Fault (Figure 2). These are modelled as fault plane objects, as normal style dipping at a notional 60°, based on mapped surface faults, and are represented as steps in the bases of geological units. Figure 5 shows the Area 9 route cross-section, which passes through both of these faults. Although the route cross section traverses the Birmingham Fault only once, it approaches it elsewhere so that the fault plane may lie below the route at a very approximately estimated — 50 m OD around SP 095 887. Note that Powell et al. (2000)<ref name="Powell 2000">POWELL, J H, GLOVER, B W, and WATERS, C N. 2000. Geology of the Birmingham area. Keyworth: Nottingham, Memoir of the British Geological Survey. '''Sheet 168 (England and Wales)'''. </ref>, p.102 states that the Birmingham Fault has been observed to comprise at least four planes locally and the presence of multiple planes may be the case with other faults.

[[Image:OR16034fig5.jpg|thumb|center|700px| '''Figure 5'''    Fault representation in cross-section HS2_Birm_Spur_Route_Section_a. ]]
==References==
{{reflist}}
[[Category: OR/16/034 Metadata report for GSI3D cross sections along the HS2 route in Area 9 (Birmingham spur) | 04]]

OR/16/034 Modelled faults - Revision history

Dbk: 1 revision imported

Geosource>Ajhil at 10:16, 25 April 2018