TITLE:
The Use of the Stream Length-Gradient Index in Morphotectonic Analysis of Drainage Basins in Poços de Caldas Plateau, SE Brazil
AUTHORS:
Carolina Doranti-Tiritan, Peter Christian Hackspacher, Daniel Henrique de Souza, Marli Carina Siqueira-Ribeiro
KEYWORDS:
Component, Formatting, Style, Styling, Insert
JOURNAL NAME:
International Journal of Geosciences,
Vol.5 No.11,
October
27,
2014
ABSTRACT: The Pocos de Caldas Plateau is formed by the alkaline intrusion of Pocos
de Caldas and surrounding metamorphic basement. It is characterized as a
remnant of the South American Planation Surface resulted from erosional events
from Late Cretaceous-Paleogene transition. Pocos de Caldas Alkaline Massif
(PCAM) was formed during alkaline volcanism event from the Late Cretaceous. It
is located on the west side of the Mantiqueira Mountain Range, characterized by
alkaline rocks and topography reaches over 1700 m high. A major feature of
denudation is the development of the “circular drainage”, a particular feature
of some caldera and other circular or concentric structural features. Recent
tectonic movements may critically affect regional geomorphology by influencing
river patterns and orientations. The morphometric analysis shows that some
rivers are controlled by reactivated faults, however, in some regions the
lithology has major influence in the rivers development.