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NARROW
Format
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Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Central Africa
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Congo Democratic Republic (1)
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East Africa
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developing countries (3)
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Europe
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NanTroSEIZE
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Polynesia
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Tonga
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Pacific Coast (5)
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Pacific Ocean
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Equatorial Pacific (10)
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South Pacific
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Central America
Induced Resonance and Forces Imparted on Buildings from Volcano Infrasound Open Access
Relationships Between Upper‐Plate Structure, Mantle Wedge Melting, and Fore‐Arc Sliver Transport in the Nicaraguan Subduction Zone Open Access
b ‐Value Maps for Some Volcanoes Worldwide: What Do We Learn? Available to Purchase
Tectonostratigraphic evolution of a marginal basin during the transition from arc collision to subduction: The case of the northern Pacific forearc of Colombia Available to Purchase
Hydrous Melting and its Seismic Signature Available to Purchase
Acahualinca, Nicaragua, a scientifically significant site of ancient human footprints in the New World Available to Purchase
Abstract Ancient human footprints have been known from Managua, Nicaragua, since the 1880s. The main footprint site, long preserved in the Acahualinca Tracks Museum ( Huellas de Acahualinca ), reveals hundreds of human footprints that represent a minimum of 12 clearly defined trackways and a trampled trail or path. Deer, opossum and bird tracks are also present at Acahualinca, and bison and tapir tracks have been documented from the nearby and stratigraphically equivalent El Recreo site. The age of the Acahualinca footprints is controversial, but the best current estimate is about 2–2.2 ka BP. The Acahualinca site is one of the most scientifically important human footprint sites known from the Holocene. It exhibits footprints that are very abundant, well-preserved, accessible for study and part of a large sample that demonstrates variation within a single population. The Acahualinca site has historical, cultural and archaeological importance in preserving at least two intervals of human occupation, that of the footprints and of the ceramics in much younger layers. Its significance to anthropology and palaeontology as a sub-fossil footprint locality is clear and the volcanological history of the area is intimately related to determining the age and the circumstances of footprint registration at Acahualinca. The Acahualinca footprints merit geoheritage status.
Supergene Oxidized Gold-Silver Deposits in the Americas: Guides for Geologists Available to Purchase
Miocene vanishing of the Central American Seaway between the Panamá Arc and the South American Plate Available to Purchase
San Albino, Nicaragua: A Low-Angle, Thrust-Controlled Orogenic Gold Deposit Available to Purchase
Empirical Earthquake Source Scaling Relations for Maximum Magnitudes Estimations in Central America Available to Purchase
Detrital zircon geochronology from the Nueva Segovia Schist, Nicaragua: evidence for the tectonic evolution of the Chortis Block? Available to Purchase
Abstract The Chortis Block of Central America is a cratonic-type peri-Gondwanan terrane and is commonly included in Neoproterozoic–Paleozoic palaeogeographical reconstructions. At present, most research has focused on the Mesozoic evolution of the Chortis Block, however, its earlier history remains poorly constrained. As a result, there is considerable debate surrounding the internal complexities of the Chortis Block and its tectonothermal evolution has not been well established by geochronological and geochemical data. New field investigations from the Nueva Segovia Schist (Northern Nicaragua), considered one of the oldest exposed parts of the Chortis Block, reveal it is composed primarily of deformed sequences of greenschist facies marine clastic and chemical sediments in conformable contact with felsic volcanics. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) detrital zircon data from two samples taken from the Nueva Segovia Schist reveal a youngest age peak of c. 250 Ma with other significant peaks at c. 500 Ma, c. 1.0 Ga and c. 1.2 Ga. Taken together with field observations, these data suggest the Nueva Segovia Schist was likely deposited between c. 250 and 110 Ma proximal to Amazonia during the Late Paleozoic, and they support a Precambrian age for the basement of the East Chortis Terrane. Taken together the data support a Pangaean position of the Chortis Block, adjacent to Amazonia inboard of Oaxaquia.