Results 151 to 160 of about 13,545 (201)

Multi-isotope analysis of mammal bones provides environmental context for the adoption of agriculture in the Tehuacan Valley of Mexico. [PDF]

Sci Adv
Somerville AD, Casar I, Hernández-Flores R, Otero F, Alvarado EC, Dalmas D, Arroyo-Cabrales J, Flannery KV, Morales-Puente P, Beramendi-Orosco LE.   +9 more
europepmc   +1 more source

A probable ancient nearshore zone in southern Utopia on Mars unveiled from observations at the Zhurong landing area. [PDF]

Sci Rep
Wu B, Dong J, Wang Y, Rao W, Sun Z, Krasilnikov S, Li Z, Tan Z, Chen Z, Wang C, Ivanov M, Zhu J, Liu WC, Chen L, Li H.   +14 more
europepmc   +1 more source

Geologic Constraints on the Formation and Evolution of Saturn's Mid-Sized Moons. [PDF]

Space Sci Rev
Rhoden AR, Ferguson SN, Bottke W, Castillo-Rogez JC, Martin E, Bland M, Kirchoff M, Zannoni M, Rambaux N, Salmon J.   +9 more
europepmc   +1 more source

A tale of two planets: Disparate evolutionary models for Mars inferred from radiogenic isotope compositions of Martian meteorites. [PDF]

Proc Natl Acad Sci U S A
Borg LE, Kruijer TS.
europepmc   +1 more source

Reduced contribution of sulfur to the mass extinction associated with the Chicxulub impact event. [PDF]

Nat Commun
Rodiouchkina K, Goderis S, Senel CB, Kaskes P, Karatekin Ö, Böttcher ME, Rodushkin I, Vellekoop J, Claeys P, Vanhaecke F.   +9 more
europepmc   +1 more source

El Niño modulated Holocene hydroclimate extremes as a dipolar pattern of droughts in northeastern China and floods in southwestern China. [PDF]

Sci Rep
Fan J, Xu H, Zhang F, Jiang H, Zhai D, Shi W, Wei X, Zhang W, Xiao J.   +8 more
europepmc   +1 more source

Volcanism-induced collapse and recovery of the Atlantic meridional overturning circulation under glacial conditions. [PDF]

Sci Adv
Vettoretti G, Hu RJ, Bethke I, Krüger K, Sigl M, Outten S, Lin J, Nuterman R, Svensson A, Ditlevsen P, Jochum M.   +10 more
europepmc   +1 more source

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New crater calibrations for the lunar crater-age chronology

Earth and Planetary Science Letters, 2014
Abstract Measuring the spatial density of craters emplaced on geologic units is the primary method used for remotely estimating ages of solar system surfaces. The calibration for this method, which enables conversion of crater density to absolute age, comes from Apollo and Luna lunar samples for which absolute radiometric ages have been determined ...
openaire   +3 more sources

Crater size-frequency distributions and a revised Martian relative chronology

Icarus, 1988
A relative plotting technique is applied to Viking 1:2M photomosaics of 25,826 Martian craters of diameter greater than 8 km and age younger than that of the Martian surface. The size-frequency distribution curves are calculated and analyzed in detail, and the results are presented in extensive tables and maps.
Nadine G Barlow
openaire   +3 more sources

Cratering Chronology and the Evolution of Mars

Space Science Reviews, 2001
Results by Neukum et al. (2001) and Ivanov (2001) are combined with crater counts to estimate ages of Martian surfaces. These results are combined with studies of Martian meteorites (Nyquist et al., 2001) to establish a rough chronology of Martian history.
Hartmann, W.K., Neukum, G.
openaire   +2 more sources