Outcrop

/ˈaʊt.kɹɑp/

चट्टान का सतह पर उभरा/प्रकट भाग; (भूस्तर का) सतह पर निकल आना

Hard #भूविज्ञान #शैलविज्ञान #भू-आकृति #खनिज #पृथ्वी-विज्ञान #तकनीकी-शब्द

Origin & History

From out- + crop, originally meaning “to come out; to protrude,” later specialized in geology for rock layers exposed at the surface (attested from the 18th–19th centuries).

out- + crop से बना शब्द; आरंभिक अर्थ “बाहर निकलना/उभरा होना” था, जो 18वीं–19वीं शताब्दी में भूविज्ञान में सतह पर दिखाई देने वाली शैल-परतों के विशेष अर्थ में प्रचलित हुआ।

Definition

In geology, an outcrop is a part of a rock formation or bedrock that is exposed and visible at the ground surface, often because erosion or uplift has removed the soil cover; as a verb, it means (of a rock layer/stratum) to appear at the surface.

भूविज्ञान में outcrop वह स्थान/भाग है जहाँ किसी शैल-गठन (rock formation) या आधारशैल (bedrock) का हिस्सा मिट्टी के आवरण के हटने (कटाव) या भू-उत्थान के कारण जमीन की सतह पर खुलकर दिखाई देता है; क्रिया के रूप में इसका अर्थ है (किसी भूस्तर/परत का) सतह पर प्रकट होना।

Parts of Speech

Noun:
The hikers rested on a granite outcrop overlooking the valley.
Verb:
In this area, limestone beds outcrop along the riverbank.

Usage Examples

Geologists mapped the outcrop to understand the local stratigraphy.
The ore was discovered near an outcrop of dark volcanic rock.
Sandstone layers outcrop intermittently along the cliff face.
The fossil was found in an outcrop exposed after heavy rain.

Synonyms

Exposure Rock exposure Bedrock exposure Rock outwash (rare/incorrect in many contexts) Promontory (non-geologic sense)

Antonyms

Inlier (context-dependent) Covered ground Overburden (in contrast to exposed rock)

Related Forms

Noun
Outcrop / Outcropping / Outcrop area
Verb
Outcrop / Outcropping / Outcropped
Adjective
Outcropping (e.g., outcropping bedrock)

Idioms & Phrases

Rock outcrop
उघड़ी/उभरी चट्टान (सतह पर दिखने वाली चट्टान)
Bedrock outcrop
आधारशैल का उघड़ा भाग (जहाँ bedrock सतह पर दिखाई दे)
To outcrop at the surface
सतह पर प्रकट/निकल आना