Tectonica De Placas

PERU
Peru covers 1,285,216 km2 (496,225 sq mi). It borders Ecuador and Colombia to
the north, Brazil to the east, Bolivia to the southeast, Chile to the south, and
the Pacific Ocean to the west. The Andes Mountains run parallel to the
Pacific Ocean; they define the three regions traditionally used to describe
the country geographically. The coast, to the west, is a narrow plain,
largelyarid except for valleys created by seasonal rivers. The highlands
is the region of the Andes; it includes the Altiplano plateau as well as the
highest peak of the country, the 6,768 m (22,205 ft) Huascaran. The
third region is the jungle, a wide expanse of flat terrain covered by
the Amazon rainforest that extends east. Almost 60% of the country's
area is located within this region.
HYDROCARBONBASINS
They are large asymmetric
structural located
along and parallel to the Andes,
filled
of
marine and continental sediments with hydrocarbon potential. Peru basins match with 3 natural
regions:
 Foreland
Basins, west of
the Brazilian - Guyana shield – (9)
 Fold Thrust Belt Styles – (8)
 Fore and Back arc in extensional
structural styles, Onshore (4) and
Offshore (3).

KikoValencia 2011
TALARA BASIN
Drilling in the Talara Basin started in the late XIX century. In the late half
of the XX century active oil companies were Compañia Petrolera
Lobitos, the state oil company Petrolera Fiscal and Exxon’s International
Petroleum Company until 1970. IPC acquired the “Concesiones Lima”
from the Compañia Petrolera Lobitos in the 1950’s. Production in NW
Peru comesmainly from the offshore and onshore Talara basin fields
and minor production from small onshore Tumbes Basin fields. Old
onshore fields were compartmentalized as smaller production units
from the 80´s and are currently operated by several oil companies.

The present-day structural configuration of the Talara Basin is
the result of complex extensional and gravitational tectonics
that occurredduring Paleocene and mainly during middle
Eocene times, with reactivation in Neogene time. The Talara
Basin overlies a larger morphological configuration of
Cretaceous and Paleozoic tectonic events.

Gerardo Pozo 1999.
The structural style of the Paleogene Talara Basi n is characterized by normal faulting, as well as
low-angle gravitational faults and large vertical transcurrent faults. Thistectonic style has resulted
in a number of rollover anticline structures, rotated fault blocks and growth faulting associated
with deep listric normal faults. According to regional mapping and seismic interpretation, faulting
is more intense in the onshore portion and shallow offshore platform of the Talara Basin. A
regional crosssection in the northern part of the Talara and Tumbes Basinsindicates a regional
tilting to the west
The sedimentary fill of the Talara Basin is controlled by structural deformation that has produced a
complex clastic sedimentary sequence with a wide variation of formation thicknesses throughout
the basin. The synsedimentary extensional tectonics is represented by rollover anticline structures
associated with high and low-angle listric normal faults.The relative movement of the listric
normal faults is directly related to the configuration of Paleozoic and Basement rocks.
SALAVERRY BASIN
The Salaverry Basin is in exploration stage by Savia Peru. It is a
very young inner forearc basin containing more than 4 Km. of
sediments generally no older than Middle Miocene in age. Its
evolution begins during Paleocene as an east platform of Trujillobasin. It is located in the North of the Peruvian Shore. Structurally
the basin is quite simple and has the geometry of an almost
symmetrical, elongated oval. The basin is punctuated by a series
of NW-SE to N-S trending wrench faults. In the northern part of
the basin a very prominent WNW-ESE trend is present which cuts
only the shallow section and does not affect basement. Another...