@Article{RossettiVascValeBeze:2021:JuRi,
author = "Rossetti, Dilce de F{\'a}tima and Vasconcelos, David L. and
Valeriano, M{\'a}rcio de Morisson and Bezerra, Franciscos
Hil{\'a}rio R.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal de Campina Grande (UFCG)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
do Rio Grande do Norte (UFRN)}",
title = "Tectonics and drainage development in central Amazonia: The
Juru{\'a} River",
journal = "Catena",
year = "2021",
volume = "206",
pages = "e105560",
month = "Nov.",
keywords = "Central Amazonia, Digital elevation model, Neotectonics,
Paleovalleys, River dynamics.",
abstract = "Understanding the factors that controlled the development of large
rivers lacks information from modern and ancient analogues. The
Amazonian basin contains several of the largest rivers on Earth,
with many having tectonic control. The study of these rivers can
contribute to test the claim that large rivers have a tectonic
forcing. Addressing the evolution of the Juru{\'a} River is
relevant, since this is the longest Amazonian river that parallels
the Solim{\~o}es Megashear Zone, a major NE-striking structure
with a long history of reactivation of faults and folds even in
the Cenozoic. This work discusses the geological evolution of the
Juru{\'a} River along the Pleistocene-Holocene based on digital
elevation models, integrated with subsurface data (well log and
seismic reflection). The goal was to characterize some ancient
large river valleys in forested areas of Amazonia and to analyze
whether they might be related to previous paths of the Juru{\'a}
River. A physical connection was found between this river and
three elongated belts (i.e., PV1, PV2, and PV3) with low
topographic and dissection values and surfaces marked by sinuous
to meandering strings or curved lines. These characteristics led
to relate the belts to ancient Juru{\'a} River valleys, an
interpretation also suggested by the correspondence between
paleovalley morphologies and subsurface Pleistocene-Holocene
deposits with concave-up erosional bases. A tectonic hypothesis
could explain the development of these paleovalleys around
drainage basins with an annular pattern associated with a large
convex-up relief, which we relate to rock upwarping by folding.
Reconstructing the geological evolution of the Juru{\'a} River
can introduce new data in discussions focused on the origin of
large tropical rivers and on the neotectonic history of the South
American intraplate.",
doi = "10.1016/j.catena.2021.105560",
url = "http://dx.doi.org/10.1016/j.catena.2021.105560",
issn = "0341-8162",
language = "en",
targetfile = "rossetti_tectonics.pdf",
urlaccessdate = "19 maio 2024"
}