Structural geoforms
also help us to understand the mechanisms that have given rise to them.
Meteorite drop, the volcanic caldera or the intrusion of igneous bodies, and
elliptical geoforms of tectonic processes are usually associated of circular
geoforms. Based on visual interpretations from satellite and radar scanning
images, we identify eight circular morphological features representing
depressed regions. In the northern part of the Sierras Pampeanas, there are
three geoforms and five in the Chacopampeana plain of Argentina. The circular
shape of La Ciénaga has a diameter of 15 km, Las Cejas has a diameter of 34 km
and Schaqui is 21 km in diameter. The semicircular structures (Las Víboras, El
Fadeté, La Irma and Laguna de los Cisnes) of the Chacopampeana plain are
between 15 and 31,5 km in diameter. An E-W attack, 12 km long and 4 km high,
has similar characteristics to those mentioned in the literature, in the
elongated Campo del Cielo structure linked to the El Fadeté structure. In an area of
intrusive rocks, the Schaqui structure is formed and its morphology is marked
by the interaction between them. Seismic profiles show the normal fault of one
of its edges and the basin produced at its centre in the Las Cejas structure.
Several structures consistent with the fall of meteorites were found in Campo
del Cielo; the structures mentioned there seem to be created by an object's
impact and contrast with the monotony of the rest of the region. In Argentina,
rings with these features, magnitudes and diameters have until now been unknown
and unheard with.
Author (s) Details
Adolfo Antonio Gutiérrez
Universidad Nacional de
Tucumán, Tucumán, Argentina.
Ricardo Mon
CONICET, Argentina.
Clara Eugenia Cisterna
CONICET, Argentina.
Ahmad Arnous
Universidad Nacional de Tucumán, Tucumán, Argentina.
View Book:- https://bp.bookpi.org/index.php/bpi/catalog/book/279
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