Timing of relay ramp growth and normal fault linkage, Upper Galilee, northern Israel

摘要: We investigate a kilometer‐scale steep relay rampstructure in the Galilee, northern Israel. The data indi-cate an asymmetric fold above buried tip of thesouthern boundary fault as well at lower partof ramp. Structural analysis suggests that buriedtip bounding is only few hundred metersbelow surface. A sequence colluvial wedges,exposed base southern flank relayramp over blind fault, presentssuccessively decreasing angles from 67° bottomto 30° top. three wedges rest anglesgreater than angle repose, suggesting tilting dur-ing and after deposition. suggest increasingangle result development ofthe monocline boundaryfault,which turn reflects entirerelay ramp structure. Paleomagnetic measurements testthis hypothesis. Samples four lowerwedges carbonate fill fractured bedrockyield northerly declination positive inclination.Inclination anomalies are 19.4° ± 3.3° 11.3° ±1.8° for bedrock wedges, respec-tively. These reflect part tilt. Paleo-magnetic optically stimulatedluminescence (OSL) constrain time initial defor-mation boundaryfault between 780 ka 461 75 (OSL age ofwedge 1) termination deformation to 176 ±22 wedge 5). agessuggest rates range 1°/16 kyrand 1°/8 kyr. Termination along south-ern fact tipof normal hundreds ofmeters below surface rampmay be close being breached by connecting fault.