Secondary converted waves from receiver functions are highly sensitive to physical properties below the Earth's surface. When modeled properly, waveforms of offer direct constraints on impedance contrast, depth, and P-to-S velocity ratio pertaining sedimentary, crustal mantle interfaces. In this study we introduce a nonlinear waveform inversion algorithm that matches first 5 s recorded in Alber...

A first evaluation of the sedimentary changes, including accumulation of inorganic and organic carbon on the upper slope off Southeastern Brazil under different climatic conditions, based on the analysis of a sedimentary core, is here presented. Results indicate that sedimentation rate as well sedimentary characteristics, including the nature of the organic carbon deposited during the LGM (Last...

Introduction Evolutionists and creationists have different views on the origin of sedimentary rock strata. Evolutionists, who uphold the uniformitarian doctrine of 19th century geologists, suppose that most sedimentary strata were deposited slowly over millions of years as the Earth evolved gradually to its present configuration. Creationists who uphold the catastrophist doctrine of Scripture p...

17 A model for the formation and distribution of sedimentary rocks on Mars 18 is proposed. The rate–limiting step is supply of liquid water from seasonal 19 melting of snow or ice. The model is run for a O(10) mbar pure CO2 atmo20 sphere, dusty snow, and solar luminosity reduced by 23%. For these conditions 21 snow only melts near the equator, and only when obliquity &40◦, eccentricity 22 &0.12...

A large, shallow braided river delta sedimentary system developed in the Yanchang Formation during the Triassic in the southwest of the Ordos basin. In this braided delta system, abundant oil and gas resources have been observed, and the area is a hotspot for oil and gas resource exploration. Through extensive field work on outcrops and cores and analyses of geophysical data, it was determined ...