Question

地质类英语翻译汉语

The Guatemala suture zone is a major east–west left-lateral strike slip boundary that separates the North American and Caribbean plates in Guatemala. The Motagua fault, the central active strand of the suture zone,underwent two major collisional events within a system otherwise dominated by strike–slip motion. The first event is recorded by high-pressure/low temperature (HP/LT) eclogites and related rocks that occur within serpentinites both north and south of the Motagua fault. Lawsonite eclogites south of the fault are not significantly retrograded and give 40Ar/39Ar ages of 125–116Ma and Sm–Nd mineral isochrons of 144–132 Ma. Eclogites north of the fault give similar Sm–Nd isochron ages (131–126 Ma) but otherwise differ in that they are strongly overprinted by a lower pressure assemblage and, along with associated HP/LT rocks, give much younger 40Ar/39Ar ages of 88–55 Ma indicating a later amphibolite facies metamorphic event. We propose therefore that all serpentinite hosted eclogites along the Motagua fault formed at essentially the same time in different parts of a laterally extensive Lower Cretaceous forearc subduction system, but subsequently underwent different histories. The southern assemblages were thrust southwards (present coordinates) immediately after HP metamorphism whereas the northern association was retrograded during a later collision that thrust it northward at ca. 70 Ma. They were subsequently juxtaposed opposite each other by major strike slip motion. This model implies that the HP rocks on opposing sides of the Motagua fault evolved along a plate boundary that underwent both dip slip and strike slip motion throughout the Late Cretaceous as a result of oblique convergence. The juxtaposition of a convergent and strike slip system means that HP/LT rocks within serpentinites can be found at depth along much of the modern Guatemala suture zone and its eastward extension into the northern Caribbean. Both sets of assemblages were exhumed relatively recently by the uplift of mountain ranges on both sides of the fault caused by movement along a restraining bend. Recent exhumation explains the apparently lack of offset of surface outcrops along a major strike slip fault.

Answer 1

危地马拉缝合带是一个重要的东西左旋走滑边界分隔北美和加勒比地区在危地马拉板。在莫塔瓜故障，中央的缝合带活跃链，在经历了两个主要的，否则的走滑运动控制系统的碰撞事件。
第一项活动是记录high-pressure/low温度（惠普/ LT）的榴辉岩，而发生在岩石serpentinites有关北方和南方的莫塔瓜故障。柱石南部的榴辉岩的过失是没有显着退，让40Ar/39Ar年龄为125 - 116Ma和Sm - 144-132马钕矿物等时线。榴辉岩断层以北的始可予以实现
位置相似的Sm - Nd同位素年龄（131-126 Ma）的方式不同，但他们强烈较低的压力叠加和组合，以及相关的惠普/审裁处的岩石，让更年轻的40Ar/39Ar年龄在88-55马说明后来角闪岩相
变质事件。因此，我们建议所有的蛇纹岩沿主办基本上在广泛的横向早白垩世弧俯冲系统的不同部分，同时形成了莫塔瓜榴辉岩故障，但后来经历了不同的历史。南部组合的推力sout
hwards（目前坐标）后，立即惠普，而北部协会是退变质后碰撞时它的推力CA公司北上。 70马。他们其后并列相反每个主要走滑运动等。这种模式意味着对莫塔瓜故障敌对双方惠普岩石沿板块边界的经历都倾滑和走滑运动在整个晚白垩世的转变，作为一个斜融合的结果。在并列收敛和走滑系统意味着惠普/岩石内serpentinites审裁处可在沿现代危地马拉缝合带的深度和东扩到加勒比海北部延伸。这两套的组合被挖掘出来相对最近的山脉上的运动引起沿着弯曲的故障限制双方隆起。最近发掘的解释显然缺乏地表露头抵消沿主要走滑断层。

Answer 2

危地马拉缝合带是一个重要的东西左旋走滑边界分隔北美和加勒比地区在危地马拉板。在莫塔瓜故障，中央的缝合带活跃链，在经历了两个主要的，否则的走滑运动控制系统的碰撞事件。第一项活动是记录high-pressure/low温度（惠普/ LT）的榴辉岩，而发生在岩石serpentinites有关北方和南方的莫塔瓜故障。柱石南部的榴辉岩的过失是没有显着退，让40Ar/39Ar年龄为125 - 116Ma和Sm - 144-132马钕矿物等时线。榴辉岩以北断层作出类似的Sm - Nd同位素年龄（131-126 Ma）的方式不同，但他们强烈较低的压力叠加和组合，以及相关的惠普/审裁处的岩石，让更年轻的40Ar/39Ar年龄88-55马英九表示以后角闪岩相变质事件。因此，我们建议所有的蛇纹岩沿主办基本上在广泛的横向早白垩世弧俯冲系统的不同部分，同时形成了莫塔瓜榴辉岩故障，但后来经历了不同的历史。南部组合为重点向南（现坐标）后，立即惠普，而北部变质协会是在随后的碰撞退的推力是CA公司北上。 70马。他们其后并列相反每个主要走滑运动等。这种模式意味着对莫塔瓜故障敌对双方惠普岩石沿板块边界的经历都倾滑和走滑运动在整个晚白垩世的转变，作为一个斜融合的结果。在并列收敛和走滑系统意味着惠普/岩石内serpentinites审裁处可在沿现代危地马拉缝合带的深度和东扩到加勒比海北部延伸。这两套的组合被挖掘出来相对最近的山脉上的运动引起沿着弯曲的故障限制双方隆起。最近发掘的解释显然缺乏地表露头抵消沿主要走滑断层。