The island of Cyprus represents an excellent site to assess quantitatively petrologic clastic response to actively obducting oceanic sources in order to define an actualistic reference for ophiolite provenance, in terms of framework composition and heavy mineral suites. An improved methodology, an extension of the classic ternary QFL logic to include a wider spectrum of key indexes and ratios, provides an accurate synthesis of modal data and allows differentiation of three main petrographic provinces and at least seven subprovinces. Diagnostic signatures of detritus from various levels of an oceanic lithospheric source, and criteria for distinguishing provenance from suprasubduction versus mid‐oceanic ophiolites are also outlined. Modern sands derived from the Troodos Ophiolite contain variable proportions of largely pelagic carbonate to chert, boninite to basalt, diabase to metabasite, plagiogranite to gabbroic, and cumulate grains supplied from progressively deeper‐seated levels of the multilayered oceanic crust. Dense minerals are mainly clinopyroxenes (diopside), prevailing over orthopyroxenes (enstatite, hypersthene, clinoenstatite), hornblende, tremolite/actinolite, and epidote. Where serpentinized mantle harzburgites have been unroofed, detritus is markedly enriched in cellular serpentinite grains and enstatite, with still negligible olivine and spinel. Sedimentaclastic sands dominated by chert (Mamonia Province) or carbonate grains (Kyrenia Province) are deposited along the southern and northern shores of the island, respectively. Compositions of Cyprus sands are virtually unaffected by climatic, sedimentary, or anthropic processes; recycling of sandstones from foreign sources is a major process only in the Karpaz Peninsula. Petrographic analysis also provides an independent mean to identify prevalent directions of longshore sand transport.

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现实的蛇绿石出处：塞浦路斯案例

塞浦路斯岛代表了一个很好的地点，可以定量评估对活跃洋源的岩石碎屑响应，以便在框架组成和重矿物套件方面定义蛇绿岩来源的实际参考。改进的方法是经典三元 QFL 逻辑的扩展，包括更广泛的关键指标和比率，提供模态数据的准确综合，并允许区分三个主要岩相省和至少七个子省。还概述了来自海洋岩石圈源不同层次的碎屑的诊断特征，以及区分出处与超俯冲与中大洋蛇绿岩的标准。源自特罗多斯蛇绿岩的现代砂含有不同比例的主要是远洋碳酸盐和燧石，玄武岩到玄武岩，辉绿岩到偏玄武岩，斜长花岗岩到辉长岩，以及从多层洋壳的更深层次提供的累积颗粒。致密矿物主要是斜辉石（透辉石），主要是斜辉石（顽辉石、超辉石、斜辉石）、角闪石、透闪石/阳起石和绿帘石。在蛇纹石化地幔方辉石未被覆盖的地方，碎屑明显富含细胞蛇纹石颗粒和顽火石，橄榄石和尖晶石仍然可以忽略不计。以燧石（马莫尼亚省）或碳酸盐颗粒（凯里尼亚省）为主的碎屑砂岩分别沿该岛的南岸和北岸沉积。塞浦路斯沙子的成分几乎不受气候、沉积或人为过程的影响；仅在卡尔帕斯半岛回收外国来源的砂岩是一个主要过程。岩相学分析还提供了一种独立的方法来确定沿海砂岩运输的主要方向。