(Table 1) Age, total organic carbon, organic matter types, and pyrolysis results from DSDP Leg 84 Holes

Continental slope samples offshore Guatemala contain organic matter derived from both terrestrial and marine sources. Upper Pleistocene samples are generally amorphous-rich, with TOCs averaging 2.4%. Pliocene and Miocene sediments contain varying amounts of terrestrial material that increase in proportion down toward the base of the slope. TOCs average 0.93%. The samples are currently immature for the generation of liquid hydrocarbons.

危地马拉近海大陆坡沉积物样品所含有机质兼具陆源与海源双重成因。更新世上段样品普遍富含有机质无定形体，总有机碳（Total Organic Carbon, TOC）平均含量达2.4%。上新世与中新世沉积物中陆源物质占比各异，且其占比随向坡底方向逐渐升高，该套沉积物的总有机碳平均含量为0.93%。当前这批样品处于未成熟阶段，尚不具备液态烃类的生成能力。