The March 5, 1987, Ecuador Earthquakes Mass Wasting and Socioeconomic Effects (1991) / Chapter Skim
Currently Skimming:
2 General Geology of Northeastern Ecuador
2 General Geology of Northeastern Ecuador
Pages 23-28
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 23... ...
, one of the two major branches of the Ecuadorian Andean Mountains. Much of the ground surface of the Costa consists of Quaternary volcanic and alluvial soils that may be unstable under earthquake loads.
|
From page 24... ...
However, high Bouguer gravity anomalies throughout the Costa and the Cordillera Occidental led Feininger to interpret the entire area W of the Inter-Andean Valley to the N and the upper Amazon Basin to the S as allochthonous terrane underlain by oceanic crust.
|
From page 26... ...
In some areas, Miocene sediments overlie the Macuchi Formation. Small late Tertiary intrusive bodies intersect the Macuchi Formation.
|
From page 27... ...
Paleozoic lithologies include shales and a~uar~itic sandstones of the Devonian Pumbuiza Formation and limestones of the Carboniferous Macuma Formation. Three tectonic events during the Mesozoic and late Tertiary had little tectonic effect on the Oriente.
|
From page 28... ...
Ministerio de Recursos Naturales y Energeticos, Direccion General de Geologic y Minas, Quito, 70. Baldock, J
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.