The paleosols from which these nodules originated are interpreted to have formed under well-drained soil conditions. The positive δ 18 O values derived from calcite cement of these samples are ...

The Upper Triassic of the Qiangtang Basin is a key strata for oil and gas exploration in the Qinghai-Tibet Plateau. However, it has been controversial argued about the paleoenvironmental control ...

CHARACTERIZATION OF BULK SOIL HUMIN AND ITS ALKALINE-SOLUBLE AND ALKALINE-INSOLUBLE FRACTIONS CARACTERIZAÇÃO DA DENSIDADE DE HUMINA E SUAS FRAÇÕES ALCALINAS SOLÚVEIS E ALCALINAS INSOLÚVEIS ...