A Possible Tektite Strewn Field in the Argentinian Pampa

@article{Bland2002APT,
  title={A Possible Tektite Strewn Field in the Argentinian Pampa},
  author={Philip A. Bland and Carlos Roberto de Souza Filho and A. J. Tim Jull and Simon P. Kelley and Robert M. Hough and Natalia Artemieva and Elisabetta Pierazzo and Joaqu{\'i}n Coniglio and Lucio Pedro Pinotti and V. Evers and Anton T. Kearsley},
  journal={Science},
  year={2002},
  volume={296},
  pages={1109 - 1111}
}
Impact glass associated with 11 elongate depressions in the Pampean Plain of Argentina, north of the city of Rı́o Cuarto, was suggested to be proximal ejecta related to a highly oblique impact event. We have identified about 400 additional elongate features in the area that indicate an aeolian, rather than an impact, origin. We have also dated fragments of glass found at the Rı́o Cuarto depressions; the age is similar to that of glass recovered 800 kilometers to the southeast. This material may… 

The record of Miocene impacts in the Argentine Pampas

Abstract— Argentine Pampean sediments represent a nearly continuous record of deposition since the late Miocene (∼10 Ma). Previous studies described five localized concentrations of vesicular impact

Evidence from central Mexico supporting the Younger Dryas extraterrestrial impact hypothesis

We report the discovery in Lake Cuitzeo in central Mexico of a black, carbon-rich, lacustrine layer, containing nanodiamonds, microspherules, and other unusual materials that date to the early

RadiocarbondateonmegafaunafromthelatePleistocene-earlyHolocene ofCórdobaprovince,Argentina:stratigraphicand paleoclimatic significance

A radiocarbon date (7550 ± 60 yr 14 C BP) was obtained from bone collagen of an extinct ground sloth (Scelidotherium leptocephalum) from the locality of Rio Cuarto (Cordoba province, Argentina). The

The Impact Record of Southwest Gondwana

Impact cratering has been, and still is, a planetary process of utmost importance. Here, the limited impact record for Southwest Gondwana, amended by the record of Australia and the only two impact

Radiocarbon date on megafauna from the late Pleistocene - early Holocene of Cordoba province, Argentina: Stratigraphic and paleoclimatic significance

A radiocarbon date (7550 ± 60 yr 14C BP) was obtained from bone collagen of an extinct ground sloth (Scelidotherium leptocephalum) from the locality of Rio Cuarto (Cordoba province, Argentina). The

Low-angle collision with Earth: The elliptical impact crater Matt Wilson, Northern Territory, Australia

Nearly all meteorite impact craters on Earth are circular. However, ~4% of craters should be formed by impacts at angles lower than 12° from the horizontal, which should result in elongated crater

Impacts, mega-tsunami, and other extraordinary claims

We welcome the comments of Abbott et al., Firestone and West, and Bunch et al.; in fact, we anticipated and hoped for the opportunity to further discuss the rash of recent impact claims and

Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago

TLDR
Sediment sequences from 18 dated Younger Dryas boundary (YDB) sites are examined and results are inconsistent with anthropogenic, volcanic, authigenic, and cosmic materials, yet consistent with cosmic ejecta, supporting the hypothesis of extraterrestrial airbursts/impacts 12,900 years ago.

References

SHOWING 1-8 OF 8 REFERENCES

Pleistocene glass in the Australian desert: The case for an impact origin

Irregular masses and flat slabs of vesicular, slaglike, and glassy melt (referred to herein as Edeowie glass) are locally abundant on a desert plain in central South Australia, where the material

Recent grazing impacts on the Earth recorded in the Rio Cuarto crater field, Argentina

THE most probable angle of a meteoroid impact on a planet is 45°, and an impact at 15° from the horizontal or lower is as likely as at 75° or higher1,2. Yet little direct evidence for oblique impacts

Ground truth for oblique impact processes: New insight from the Rio Cuarto, Argentina, crater field

New evidence for an impact origin of oblong rimmed depressions near Rio Cuarto, Cordoba Province, Argentina, includes shocked silicate phases (e.g., diaplectic glass), thermal decomposition of

Beryllium-10 in Australasian Tektites: Evidence for a Sedimentary Precursor

TLDR
The beryllium-10 contents of these australites are consistent with a sedimentary precursor that adsorbed from precipitation berylla-10 produced in the atmosphere.

Be-10 and chemistry of impactites and target materials from the Rio Cuarto crater field, Argentina: Evidence for surficial cratering and melting

We report in this study on the distribution of the cosmogenic isotope Be-10 and major and trace elements in impactites (clast-rich melt and glasses) and target materials (soil and loess) from the Rio

Impact Stratigraphy: The Italian Record

Introduction: Impact cratering as a geological process.- Distal ejecta and tektites.- Important distal ejecta layers and their source craters.- The umbria-marche sequence.- Impact stratigraphy in the

The Age of the Meteorite Recovery Surfaces of Roosevelt County, New Mexico, USA

We have obtained minimum age estimates for the sand units underlying the two largest meteorite deflation surfaces in Roosevelt County, New Mexico, USA, using thermoluminescence dating techniques. The