1
an outcropping of [rock type]
outcropping 是可数名词，常用 of 短语说明岩石种类。
We climbed over an outcropping of grey limestone.
我们爬过了一片灰色石灰岩露头。
露头；出露岩层
先理解核心含义，再看它在真实句子里的用法。
露头；出露岩层
the part of a rock formation that appears above the surface of the surrounding land
We climbed over an outcropping of grey limestone.
我们爬过了一片灰色石灰岩露头。
出露地表; 矿苗
n the part of a rock formation that appears above the surface of the surrounding land；v appear on the surface, come to the surface on the ground
We climbed onto the rocky outcropping to get a better view of the valley.
我们爬上岩石露头，以便更好地欣赏山谷的景色。
The hikers rested beside a large outcropping before continuing down the trail.
徒步旅行者在一块大露头旁休息，然后继续沿小路前行。
Fossils are often found where an outcropping exposes older rock layers.
在露头暴露较老岩层的地方，常能发现化石。
outcropping 是可数名词，常用 of 短语说明岩石种类。
We climbed over an outcropping of grey limestone.
我们爬过了一片灰色石灰岩露头。
The prominent outcropping served as a landmark.
那座显著的露头充当了地标。
句中 outcropping 为动词 outcrop 的现在分词，作状语，常与地点状语连用。
Outcropping from the hillside, the granite was clearly visible.
花岗岩从山坡露出地表，清晰可见。
Not this
The geologist found outcropping of granite on the slope.
Use this
The geologist found an outcropping of granite on the slope.
outcropping 表示“露出的岩层”时是可数名词，单数形式前需要用冠词 an；汉语没有冠词，学习者容易漏掉，因此要加上 an。
Not this
We saw rocks outcropping the hillside.
Use this
We saw rocks outcropping on the hillside.
outcrop 是不及物动词，不能直接接地点宾语；汉语可以说“出露地表”，但英语要用介词 on 来连接地点，所以应改为 outcropping on the hillside。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
岩石露头
The trail passes a large rock outcropping.
这条小路经过一处大型岩石露头。
花岗岩露头
An old pine grows on a granite outcropping.
一棵老松树长在花岗岩露头上。
石灰岩露头
The cave entrance lies beneath a limestone outcropping.
洞口位于一处石灰岩露头下方。
裸露的岩层露头
Only a few lichens grow on the bare outcropping.
只有少数地衣生长在裸露的岩层露头上。
基岩露头
The dam is built on a bedrock outcropping.
大坝建在基岩露头上。
Use outcropping naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
out(出来)+crop(露出)+ping：岩石从地里冒出来，像庄稼露出地面。
语域：formal 常见场景：geology、mining 该词多用于地质或采矿等专业书面语境，比较正式；日常口语中较少使用。
动词义为 'outcrop' 的现在分词/动名词，并非独立动词原形。
Dictionary facts from ECDICT, WIKTIONARY.