The Malaguide‐Ghomaride Complex is capped by Upper Oligocene–Aquitanian clastic deposits postdating early Alpine orogenesis but predating the main tectonic‐metamorphic evolution, end of nappe emplacement, unroofing, and exhumation of the metamorphic units of the Betic‐Rif Orogen. Two conglomerate intervals within these deposits are characterized by clasts of sedimentary, epimetamorphic, and mafic volcanic rocks derived from Malaguide‐Ghomaride units and by clasts of acidic magmatic and orthogneissic rocks of unknown provenance, here studied. Magmatic rocks originated from late‐Variscan two‐mica cordierite‐bearing granitoids and, subordinately, from aplitic dikes. Orthogneisses derive from similar plutonic rocks but are affected by an Alpine metamorphic overprint evolving from greenschist ( \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $$T=510^{\circ }$$ \end{document} –530°C and \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $$P=5$$ \end{document} –6 kbar) to low‐temperature amphibolite facies ( \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $$T> 550^{\circ }\mathrm{C}\,$$ \end{document} and \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $$P< 3$$ \end{document} kbar). Such a plutonic rock suite is unknown in any Betic‐Rif unit or in the basement of the Alboran Sea, and the metamorphic evolution in the orthogneisses is different from (and older than) that of Alpujarride‐Sebtide rocks to which they were formerly ascribed. Magmatic and metamorphic rocks very similar to those studied characterize the basements of some Kabylia and Calabria‐Peloritani units. Therefore, the source area is a currently lost continental‐crust realm of Calabria‐Peloritani‐Kabylia type, located to the ESE of the Malaguide‐Ghomaride Domain and affected by a pre‐latest Oligocene Alpine metamorphism. Increasingly active tectonics transformed this realm into rising areas from which erosion fed small subsiding synorogenic basins formed on the Malaguide‐Ghomaride Complex. This provenance analysis demonstrates that all these domains constituted a single continental‐crust block until Aquitanian‐Burdigalian times, before its dispersal around nascent western Mediterranean basins.

中文翻译：

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贝蒂奇里夫造山带（西班牙和摩洛哥）内部领域的失落领域：来自砾岩的证据和高山地球动力学演化的后果

Malaguide-Ghomaride 杂岩被上渐新世-阿基坦阶碎屑沉积物覆盖，早于阿尔卑斯山早期造山作用，但早于主要构造-变质演化、推覆体侵位结束、开顶和贝蒂奇-里夫造山带变质单元的剥露。这些矿床中的两个砾岩层段的特征是来自 Malaguide-Ghomaride 单元的沉积、后变质和基性火山岩碎屑，以及来源不明的酸性岩浆和正片麻岩碎屑，这里进行了研究。岩浆岩起源于晚瓦里西干双云母含堇青石的花岗岩，其次是来自阿普利特岩脉。OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty } \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $$P< 3$$ \end{document} kbar）。这种深成岩组在任何 Betic-Rif 单元或 Alboran 海的基底中都是未知的，并且正片麻岩中的变质演化不同于（并且早于）它们以前归属于的 Alpujarride-Sebtide 岩石。与所研究的岩浆岩和变质岩非常相似的岩浆岩和变质岩表征了一些 Kabylia 和 Calabria-Peloritani 单元的基底。因此，源区是目前失落的卡拉布里亚-佩洛里塔尼-卡比利亚型大陆地壳领域，位于 Malaguide-Ghomaride 域的 ESE，受最新渐新世高山变质作用的影响。日益活跃的构造将这一领域转变为上升区域，从这些区域侵蚀形成了在 Malaguide-Ghomaride 复合体上形成的小型下沉共生盆地。该物源分析表明，所有这些区域构成一个单一的大陆地壳块，直到 Aquitanian-Burdigalian 时代，然后才散布在新生的西地中海盆地周围。