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In comparison with the petrography and petrochemistry of hydrothermal sedimentary albitite in the Devonian of the Qinling, combined with the fact that its Lower Paleozoic belongs to a passive continental-margin rift environment on the northern margin of the Yangtze plate,the authors think that the Lower Paleozoic albitite in question is probably of hydrothermal sedimentary origin.

通过与秦岭泥盆纪热水沉积钠长石岩的岩相学及岩石化学对比，结合本区下古生界属于扬子北缘被动陆缘裂谷环境，初步认为这里下古生界钠长石岩可能属于热水沉积成因。

Corolla white, yellow, or purple-red, 2-lipped; tube dilated in front near base, long exserted, not hairy annulate inside; upper lip short, straight, margin entire or emarginate; lower lip longer, subpatent, 3-lobed; middle lobe largest, emarginate, margin undulate to dentate.

花冠白色，黄，或紫色红色，二唇形；在前面扩大的筒部近基部，长，不有毛有环在里面；上唇短，直，边缘全缘或微缺；下唇长，subpatent，3浅裂；大，微缺的中部裂片，边缘波状对具牙齿。

Petiole 2-6 mm; leaf blade ovate or elliptic, 3.5-7 × 2.5-4.5 cm, both surfaces glabrous, or abaxially sparsely villous along veins or densely white villous, base cuneate or broadly so, margin entire or serrate distally, apex acute or acuminate; leaves on flowering shoots with petiole 2-3 mm, leaf blade ovate, elliptic-lanceolate, or ovate-lanceolate, 1.5-4 × 0.5-1.5 cm, veins 3, basifugal, base cuneate or broadly so, margin subentire, apex obtuse or acute.

叶柄2-6毫米；叶片卵形或椭圆形， 3.5-7 * 2.5-4.5 厘米，两面无毛叶在花嫩枝具叶柄2-3毫米，叶片卵形上，椭圆状披针形，披针形或卵形， 1.5-4 * 0.5-1.5 厘米，脉，basifugal，基部楔形或宽楔形，边缘近全缘，先端钝或锐尖。

Male flowers pedicellate or sessile; sepals 4-6, distinct, usually unequal, imbricate; petals absent; stamens 1-25, 1 to several whorls surrounding disk or outer ones inserted at margin or sinus of disk, inner ones inserted on disk; filaments free; anthers bilocular, usually introrse, rarely extrorse, longitudinally dehiscent; disk flattened or concave, margin shallowly or deeply fid; rudimentary ovary very small or absent.

雄花有花梗或无梗；萼片4-6，离生，通常不等长，覆瓦状；花瓣无；雄蕊1-25，1或数轮围绕花盘或外轮着生于花盘边缘或凹缺，内轮着生于花盘；花丝离生花药具2室，通常内向，很少外向，纵向开裂；花盘扁平或凹，边缘浅或深裂；不发育子房非常小的或无。

Leaves 1 or 2 per ultimate branch; sheath margins ciliolate; auricles absent, oral setae few, 1–2 mm; ligule truncate, ca. 0.4 mm; blade linear-lanceolate, 4–9.4 × 0.5–0.9 cm, glabrous, secondary veins 2- or 3-paired, transverse veins obscure, base cuneate, one margin spinescent-serrulate, other margin obscure.

每末级的分枝留下1或2；鞘边缘具短缘毛；叶耳无，口头的刚毛少数，1-2毫米；叶舌削去，大约0.4毫米；叶片线状披针形， 4-9.4 * 0.5-0.9 厘米，无毛，2或3配对的次脉，不明显的横向脉，基部楔形，具刺有细锯齿的一边缘，不明显的其他边缘。

Leaves simple, alternate, sometimes fascicled on short branchlets, conduplicate when young; petiole usually with 2 nectaries or sometimes nectaries at base of leaf blade margin; leaf blade margin often serrate.

有托叶。单叶，交替，有时由短开出的簇生小枝，幼时；叶柄通常具2蜜腺或有时蜜腺在基部的叶片边缘；叶片边缘通常有锯齿。

Leaves simple, alternate or fascicled on short branchlets, conduplicate when young; petiole usually with 2 apical nectaries or nectaries sometimes at base of leaf blade margin; leaf blade margin singly or doubly serrate, rarely serrulate.

单叶，交替或在上，对折幼时；有时的叶柄通常具2顶端的蜜腺或蜜腺叶片边缘的在基部；单个的叶片边缘或重锯齿，很少有细锯齿。

Neoproterozoic Baoxing Complex in middle to lower metamorphic grade, located in western margin of Yangtze Craton, consists mainly of metamorphic gabbroic, dioritic gneisses, tonalitic and granodioritic gneisses, and massive monzogranites The studies of petrochemistry and SmNd isotopes of Baoxing Complex reveal that the gabbroic and dioritic magmas came from a congenetic magma derived from the partial melting of spinel lherzolites in depletive mantle, and that the magma was intensively contaminated by crustal materials during its emplacement The tonalitic and granodioritic magma were derived from the partial melting of metamorphic basalts in the lower crust And the monzogranitic magma was formed from partial melting of metagreywacks Integrating the lithological association, their trace elements, SmNd isotopic characteristics and petrogenesis, the Baoxing Complex must likely have been emplaced in an island arc tectonic background at the Neoproterozoic active continental margin of Yangtze Craton

位于扬子克拉通西缘的新元古代宝兴杂岩主要由中低级变质的辉长质片麻岩、闪长质片麻岩、英云闪长质到花岗闪长质片麻岩和块状二长花岗岩组成。岩石地球化学和SmNd同位素特征表明，辉长质片麻岩和闪长质片麻岩为同源岩浆演化序列，原始岩浆起源于亏损地幔尖晶石橄榄岩的部分熔融，在上升和侵位过程中受到了地壳岩石强烈混染。英云闪长质和花岗闪长质岩浆形成于下地壳玄武质岩石部分熔融，而二长花岗质岩浆形成于杂砂岩的部分熔融。综合分析宝兴杂岩的岩石组合、微量元素和同位素特征，该杂岩体最有可能形成于新元古代活动大陆边缘火山弧构造背景，并可能经历了碰撞过程。

Petiole sessile or very short, 1-3 mm; leaf blade papery, ovate or ovate-elliptic, 3.5-5 × 1.8-2.5 cm, base cuneate or suborbicular, margin crenulate, apex acute or acuminate; lateral veins ca. 5 pairs, invisible, disappearing before reaching margin.

叶柄无梗或非常短的，1-3毫米；叶片纸质，卵形卵状或椭圆形，3.5-5 * 1.8-2.5厘米，基部楔形或近圆形，边缘具细圆齿，先端锐尖的或渐尖；侧脉约5 对，看不见，在到达边缘前消失。

Stipules absent. Leaves alternate, simple, odd-pinnate, or digitately trifoliolate; blades of simple leaves entire at margin, those of compound leaves crenulate, crenate, lobulate, or rarely entire at margin.

托叶无。叶互生，单，奇数羽状复叶，或者掌状具三小叶；单叶的叶片边缘全缘，复叶的边缘具细圆齿、圆齿，或具小裂片，或者很少边缘全缘。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？