Provenance (geology) Provenance (geology) Provenance in geology, is the reconstruction of the origin of sediments. The Earth is a dynamic planet, and all rocks are subject to transition between the three main rock types: sedimentary, metamorphic, and igneous rocks (the rock cycle). Rocks exposed to the surface are sooner or later broken down into sediments. Sediments are expected to be able to provide evidence of the erosion history of their parent source rocks. The purpose of provenance study is to restore the tectonic, paleo-geographic and paleo-climatic history. In the modern geological lexicon, "sediment provenance" specifically refers to the application of compositional analyses
Heart to Heart Community Care migrant worker community, Heart to Heart specifically targets women, children, elderly, disabled people, and other disadvantaged groups. Heart to Heart utilizes a broad-based social work approach to helping migrants, and focuses on facilitating community involvement in its work. The organization works to integrate all available resources pertaining to migrant workers, such as the government, large foundations, community organizations, and volunteers, and approaches issues on case-by-case, small group, community-wide, and broader societal level bases. Its main goals are the direct provision of services to migrant workers, research on issues relating to migrant workers in Kunming, and policy advocacy. The organization's structure