A new island biogeography of the sea of Cortés by edited by Ted. J. Case, Martin L. Cody, Exequiel Ezcurra

By edited by Ted. J. Case, Martin L. Cody, Exequiel Ezcurra

Historical past of medical exploration within the Sea of Cortés / George E. Lindsay and Iris Engstrand --
Geology and a while of the islands / Ana Luisa Carreño and Javier Helenes --
Physical oceanography / Saul Álvarez-Borrego --
Plants / Martin L. Cody ... [et al.] --
Ants / April M. Boulton and Philip S. Ward --
Tenebrionid beetles / Francisco Sanchez Piñero and Rolf L. Aalbu --
Rocky-shore fishes / Donald A. Thomson and Matthew R. Gilligan --
Nonavian reptiles : origins and evolution / Robert W. Murphy and Gustavo Aguirre-Léon --
Reptiles : ecology / Ted J. Case --
Land birds / Martin L. Cody and Enriqueta Velarde --
Breeding dynamics of Heermann's gulls / Enriqueta Velarde and Exequiel Ezcurra --
Mammals / Timothy E. Lawlor ... [et al.] --
Island nutrients webs / Gary A. Polis ... [et al.] --
Human impression within the Midriff Islands / Conrad J. Bahre and Luis Bourillón --
Cultural dispersal of vegetation and reptiles / Gary P. Nabhan --
Ecological conservation / Exequiel Ezcurra ... [et al.]

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Strata contemporaneous with the coquina crop out approximately +10 m on the west bank of the actual deltaic plains (on the eastern side of Sierra El Mayor), and at +8 m in the San Felipe area. According to Anderson (1950), Isla Roca Consagrada, at the extreme northern end of the gulf, is granitic in composition. It is undoubtedly related to the granitic rocks of Baja California and is probably an eastward extension of the Peninsular Batholith. El Huerfanito, Miramar (El Muerto or Link), Coloradito (Los Lobos, Lobos, or Salvatierra), and El Cholludo islands are formed mainly by Miocene volcanic rocks.

Later, considering plate tectonics concepts, a set of plate-driven rifting models was developed (Moore and Buffinton 1968; Karig and Jensky 1972; Larson 1972) to explain the evolution of the gulf. Mammerickx (1980) was the first to suggest that the proto-gulf be formed as part of a continuous rifting and drifting process in which it became oceanic in character. Later, Curray et al. 5 Ma. Some of the earlier models (Atwater 1970; Karig and Jensky 1972) propose that even when the gulf opened 4 Ma ago, there was east-west normal faulting in the area Geology and Ages of the Islands 17 Approximate extent of marine basins during the early Pliocene in the Gulf area.

S. 5e) shoreline a few meters above present mean sea level, and with no highly elevated middle Pleistocene terraces, have not been subject to recent vertical motion. Conversely, a staircase arrangement of marine terraces, with several interglacial marine platforms lying significantly higher than +10 m, may be taken as evidence of uplift motions during the last few hundred thousand years. ) Volcanic Volcanic Block faulting Miocene-Pliocene Pleistocene-Holocene 11, 19 11, 19 Pleistocene Pleistocene 11, 19 11, 19 Cabeza de Caballo La Ventana Miocene volcanic Obsidian dome Dacite domes and breccias Paleozoic metamorphic, Cretaceous granitic, middle to late Miocene volcanic Cretaceous tonalite and granitic (includes biotite schist enclaves) Plio-Quaternary marine and non marine deposits Miocene volcanic Paleozoic basement and Pliocene dacitic volcanic Miocene basalt flows Paleozoic metamorphic, Cretaceous granitic Partida Rasa Salsipuedes Miocene volcanic Tholeiitic basalts Miocene volcanic Angel de la Guarda Estanque (Pond) Smith (Coronado) Pleistocene Pleistocene-Holocene Pliocene 1,7, 11, 19 11 11 11 San Lorenzo Norte (Las Animas) San Lorenzo (San Lorenzo Sur) Patos, Tiburon, San Esteban, Turners (Datil) San Pedro Nolasco Tortuga Santa Marcos San Ildefonso Carmen, Danzante Coronado (Coronados) Monserrat Santa Catalina, Santa Cruz & San Diego San Jose San Francisco La Partida, Espiritu Santo Cerralvo Pliocene andesitic basalt flows and marine rocks Batholithic basement, Miocene volcanic Basement, Miocene volcanic, and Miocene and Pliocene marine Cretaceous granodiorite Tholeiitic and andesitic flows Miocene volcanic, Pliocene marine lava flows.

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