由哥廷根大学领导的国际研究团队在巴布亚新几内亚发现了一块具有异常温度历史的岩石，其深俯冲过程呈现出与现有理论模型不符的冷却模式1。这块岩石在约400万年前的俯冲过程中，在45公里深处已达到约700°C，但在90公里深处，温度仅为约800°C1。
研究人员Dr. Jan Schönig指出，这一发现挑战了对俯冲带热分布的既有认识1。他表示："从热俯冲向冷俯冲的这种变化是出人意料的，因为这与我们当前的俯冲带热模型相悖"1。该研究已发表在《自然地球科学》期刊上，并获得德国研究基金会资助1。
An international research team led by the University of Göttingen has discovered an unusual thermal signature in a rock from Papua New Guinea that challenges conventional models of how Earth's interior heats up as material sinks into the crust.1 The rock, which descended more than 90 kilometers (56 miles) approximately 4 million years ago, reached temperatures of around 700°C at a depth of 45 kilometers, but only warmed to approximately 800°C at the significantly deeper 90-kilometer mark.1
This counterintuitive cooling pattern contradicts existing thermal models of subduction zones, where rocks typically grow progressively hotter as they descend.1 Dr. Jan Schönig, one of the researchers, noted that "finding this change from hot to cold subduction was unexpected as this contradicts our current thermal models of subduction zones."1 The findings, supported by funding from the German Research Foundation (DFG), were published in Nature Geoscience.1
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