Reference

The abiogenic petroleum origin theory suggests that hydrocarbons, such as petroleum and natural gas, originate from deep within the Earth and are not solely the result of the transformation of ancient organic matter. In the Andes region, evidence supporting this theory includes:

1. The existence of abiogenic hydrocarbons, which are believed to be primordial materials of deep origin that have migrated to the surface. This is supported by geological assessments and physical theories that propose a deep-seated origin for petroleum [ResearchGate].
2. The Andes' tectonic history, which has implications for the development of the Amazon drainage basin and could potentially influence the distribution and formation of hydrocarbons [ResearchGate].
3. The theory's ability to explain the presence of hydrocarbons in certain geological settings that are not easily explained by the biogenic theory, such as in the absence of sufficient organic matter [CORE].

However, it's important to note that the scientific consensus largely supports the biogenic theory of petroleum formation, which posits that hydrocarbons are formed from the remains of ancient organisms. The abiogenic theory remains a subject of debate and has not been widely accepted within the scientific community. For more detailed information, you can refer to resources like Wikipedia's page on abiogenic petroleum origin and various research papers available on platforms like ResearchGate.