Troy P. Sampere

TL;DR: In this paper, the authors conducted density fractionations on sediments from diverse margins (Mexico margin, Gulf of Mexico, Mississippi River delta, Eel River margin) to investigate the nature, provenance and age of organic matter (OM) among density fractions.

TL;DR: In this article, the authors report on temporal changes in the concentration and composition of lignin phenols in high molecular weight (b0.2 μm, N1kDa)dissolved organic matter (HMWDOM) collected fromthelowerMississippiandPearlRivers(MRandPR)(USA).

TL;DR: This article showed that organic carbon burial rates in oxic bottom water settings on river-dominated continental margins are directly proportional to lithogenic flux, and that changes in OM remineralization rates due to changes in the composition (marine vs. terrestrial) of the particulate OM flux at the sediment surface are a second-order effect that cannot be distinguished in the bulk carbon sediment record at these oxic sites; although they may significantly alter the OM degradation-induced CO2 flux to the overlying water column.

TL;DR: This article analyzed surface sediments of the Louisiana Continental margin (LCM) to distinguish differences in the degradative state of sedimentary organic matter along and between two major depositional pathways (along shore and offshore to the Mississippi Canyon) from Southwest (SW) Pass in July 2003.

TL;DR: The potential importance of certain river-dominated margins (RiOMars) to the global carbon budget is garnering increased attention because of their disproportionate role in transporting terrigenous materials to the ocean as mentioned in this paper.