The application of thermal methods, such as Rock−Eval 6 pyrolysis or differential thermal analysis, provides complex information about sediment and rock properties, including thermal behaviour, degree of maturity, alteration of organic matter, and high temperature combustion synthesis mineral products. In this study, thermal methods included experiments on the thermokinetics of modern deep-sea sediments of the Northeast Pacific Basin. For experimental the procedure, twelve samples of siliceous clayey silts collected from the Clarion−Clipperton Fracture Zone (CCFZ), Interoceanmetal claim area, were analysed. CCFZ is highly prospective as a giant marine polymetallic deposit which contains several economically valuable metals, such as Ni, Cu, or Co. Hydrocarbon potential, thermal maturity, and roasting products were investigated. Mineralogical characteristics of thermal products were investigated. The obtained results of thermal experiments were compared with sedimentological, mineralogical, and geochemical data of bulk sediments. The total enthalpy ΔH_Tot. and activation energy E_a were proposed as a new lithogeochemical proxies of oxygen depletion during oxic−suboxic diagenesis. The distinctive increase in positive enthalpy (or heat transmission) was observed with the burial depth, where pelagic sediments showed strong oxygen depletion and consumed more energy during phase transformations.

中文翻译：

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深海沉积物的热学性质和埋藏变化：氧-成岩作用的新指示

热方法的应用，例如Rock-Eval 6热解或差热分析，提供了有关沉积物和岩石特性的复杂信息，包括热行为，成熟度，有机质的变化以及高温燃烧合成矿物产品。在这项研究中，热学方法包括东北太平洋盆地现代深海沉积物的热动力学实验。对于该程序的实验，分析了从Interoceanmetal矿床地区的Clarion-Clipperton断裂带（CCFZ）收集的12个硅质黏土粉砂样品。CCFZ具有巨大的海洋多金属矿床的前景，该矿床包含几种具有经济价值的金属，例如Ni，Cu或Co。对烃的潜力，热成熟度和焙烧产品进行了研究。研究了热产品的矿物学特征。将热实验获得的结果与散装沉积物的沉积学，矿物学和地球化学数据进行了比较。总焓ΔH _{Tot 。}氧和活化能E _a被提出作为氧-氧成岩过程中氧耗竭的一种新的岩性化学代理。随着埋藏深度的增加，正焓（或热传递）显着增加，那里的浮游沉积物在相变过程中显示出强烈的氧耗竭并消耗了更多的能量。