41. The pressurised fluids ascend towards shallower crustal levels that are under lower hydrostatic pressure. 42. These formations occur because anticlinal ridges typically develop above thrust faults during crustal deformations. 43. The removal of mass from a region will be isostatically compensated by crustal rebound. 44. Ice weight caused crustal subsidence which was greatest beneath the thickest accumulation of ice. 45. New high-angle faults control propagation of the d�collement and help crustal exhumation. 46. The Sudbury occurrence has been attributed to an impact event and associated crustal melting. 47. This was deformed in the upper crustal layers. 48. The flanks of the ridge axis are wide and lack a volcanic crustal layer. 49. During the Mesozoic and early Tertiary, the region underwent compression and crustal thickening. 50. River anticlines form around large highly erosive rivers where crustal strength is relatively low.
