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to the west. The westernmost outcrops show the largest cross-bedded structures, up to 20 m in height and some hundreds of metres in length, all pointing to the west. The large-scale cross-bedding was generated by the migration of very large dunes moved by tides. The largest structures are inferred to have formed at depths of 90 m. Depth estimations indicate that the Betic corridor shallowed toward the
Mediterranean and deepened toward the Atlantic. The Miocene evolution towards the formation of the Betic corridor can be divided into a series of steps. The palaeogeography evolved from a south-facing platform, marginal to a northeastern relief, to a wide-open marine passage limited by a southern platform and, finally, to a tidal-dominated strait. The closing of the Betic corridor is recorded by the presence of lagoonal, silty sediments covered by a stromatolite layer and crowned by a red soil in the westernmost outcrops.
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appearing in local fan-delta deposits. Betic deposits exhibit huge trough cross-bedded structures with single troughs up to 5 m high pointing to the east in the easternmost outcrops. In central outcrops, they reach up to 15 m in height and some tens of metres in length and point both to the east and
233:
JosĂ© M. MartĂn; Juan C. Bragaa; Julio
Aguirrea & Ăngel Puga-BernabĂ©ua (2009-04-15). "History and evolution of the North-Betic Strait (Prebetic Zone, Betic Cordillera): A narrow, early Tortonian, tidal-dominated, AtlanticâMediterranean marine passage".
138:
Seber, D.; Barazangi, M.; Ibenbrahim, A.; Demnati, A. (1996). "Geophysical evidence for lithospheric delamination beneath the
Alboran Sea and Rif--Betic mountains".
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A reconstruction of the paleogeography inferred at the west (Atlantic) end of the
Mediterranean Sea during the early- to mid-
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Krijgsman, W.; GarcĂ©s, M.; Langereis, C.G.; Daams, R.; Van Dam, J.; Van Der Meulen, A.J.; AgustĂ, J.; Cabrera, L. (1996).
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193:"A new chronology for the middle to late Miocene continental record in Spain"
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27:; north is to the left. * Red = current coastline * S =
78:. Its closure approximately 5.96 million years ago during the
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200:Earth and Planetary Science Letters
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54:, or North-Betic Strait, was a
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293:History of the Mediterranean
258:10.1016/j.sedgeo.2009.01.005
220:10.1016/0012-821X(96)00109-4
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88:Messinian Salinity Crisis
86:epoch, precipitated the
66:that once separated the
58:of water connecting the
212:1996E&PSL.142..367K
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98:Betic corridor rock
283:Geology of the Alps
250:2009SedG..216...80M
237:Sedimentary Geology
152:1996Natur.379..785S
41:Strait of Gibraltar
31:, Spain * R =
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146:(6568): 785â790.
116:âcarbonates with
60:Mediterranean Sea
45:Mediterranean Sea
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52:Betic Corridor
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29:Sorbas basin
102:consist of
43:* M =
39:* G =
35:* B =
272:Categories
125:References
112:and mixed
110:carbonates
107:bioclastic
104:heterozoan
303:Messinian
169:1813/5287
80:Messinian
70:from the
62:with the
246:Bibcode
208:Bibcode
178:4332684
148:Bibcode
94:Geology
84:Miocene
25:Miocene
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140:Nature
100:facies
56:strait
196:(PDF)
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