What does the term unconformity mean?

Put simply, an unconformity is a break in time in an otherwise continuous rock record. Unconformities are a type of geologic contact—a boundary between rocks—caused by a period of erosion or a pause in sediment accumulation, followed by the deposition of sediments anew.

Which of the following best describes the cone of depression?

Which of the following best describes the cone of depression? A dimple in the water table surface due to water pumped faster than an aquifer can be replenished. To ensure a continuous supply of water, a well must do what? When water is pumped from a well, drawdown occurs.

Which principle or law of Geology stated that in a sequence of undeformed sedimentary rocks?

93 Cards in this Set
Law of Superposition in undistubed layers of sedimentary rock, the oldest is on the bottom, and the youngest is on the top.
Which principle or law of geology states that in a sequence of undeformed sedimentary rocks, each bed is older than the one above law of superposition

What does the order of the fossil record mean?

A fossil record is a group of fossils which has been analyzed and arranged chronologically and in taxonomic order. Fossils are created when organisms die, are incased in dirt and rock, and are slowly replaced by minerals over time. What is left is a mineral impression of an animal which once existed.

Which of the following is the best description of aquifer?

An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater from aquifers can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.

Which is the best definition of glacial snow line quizlet?

What is the best definition of glacial snow line? the line dividing zones of accumulation and melting of ice at the surface of a glacier. Under what conditions will the front of the glacier remain stationary.

What is the study of fossil?

Paleontology is the study of the history of life on Earth as based on fossils. Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.

How do you read fossil records?

What are the 4 importance of fossil records?

They are a tangible connection to life, landscapes, and climates of the past. They show us how life, landscapes, and climate have changed over time and how living things responded to those changes. Those lessons are particularly important as modern climate continues to change.

What are called fossil?

Fossils are the preserved remains of plants and animals whose bodies were buried in sediments, such as sand and mud, under ancient seas, lakes and rivers. Fossils also include any preserved trace of life that is typically more than 10 000 years old.

What are key fossils?

Index fossils (also called key fossils or type fossils) are those that are used to define periods of geologic time.
  • Characteristics of an Index Fossil.
  • Boom-And-Bust Organisms.
  • Trilobites, Hard-Shelled Invertebrates.
  • Small or Microscopic Fossils.
  • Terrestrial Rocks.
  • Defining Ages, Epochs, Periods, and Eras.

What is a fossil for kids?

Fossils are the remains or traces of plants and animals that lived long ago. … Most fossils are found in earth that once lay underwater. They usually formed from the hard parts—such as shells or bones—of living things.

What are fossils Class 5?

Fossils are the remains or traces of ancient life that have been preserved by natural processes. Examples of fossil include shells, bones, stone imprints of animals or microbes, exoskeletons, objects preserved in amber, petrified wood, coal, hair, oil, and DNA remnants. There are five types of fossils: … Carbon Fossils.

What are fossils class 10th?

Answer: Fossils are any impressions or imprints left by some previous organism in soft mud or sedimentary rocks, which subsequently hardened. Fossils are also moulds and casts of entire organisms that got preserved. Fossils are documentary evidences of organic evolution.

What is a fossil Grade 5?

Fossils are the preserved remains of an animal, such as the animal’s bones, or impressions of the animal’s activities, such as footprints. Even poop can be considered a fossil.

What do you mean by fossils Class 7?

Answer: The remains of the deceased plant and animals trapped in the layers of rocks are called fossils.

What is a fossil ks2?

A fossil is the preserved remains or traces of a deceased organism. The process by which a fossil is formed is called fossilisation. It’s very rare for living things to become fossilised. … Minerals in the water replace the bone, leaving a rock replica of the original bone called a fossil.

What are fossils Class 9?

Organic remains of plants and animals or their skeletal impressions are called fossils.

What do you mean by fossils Class 11?

Define ‘Fossils’. Answer: The word ‘Fossils’ is used to describe the remains of very old plants, human beings or animals which have left their marks on the rock. These remains are preserved for many years.

What are fossils Class 11?

Fossils are the remains or impressions of a very old plant, animal or human which have turned into stone. These are often embedded in rock, and are thus preserved for millions of years. 364 Views.

What is fossil in zoology?

A fossil is the mineralized partial or complete form of an organism, or of an organism’s activity, that has been preserved as a cast, impression or mold. A fossil gives tangible, physical evidence of ancient life and has provided the basis of the theory of evolution in the absence of preserved soft tissues.

What is fossil PDF?

Fossils are evidence of past life, preserved in. rock.

How are fossils formed Class 10?

Fossils are formed in various forms, but most are formed in a watery environment when a plant or animal dies and is covered in mud and silt. Soft tissues rapidly decompose, leaving only strong bones or shells. The sediment builds over the top over time and hardens into rock.

What are fossils Wikipedia?

A fossil (from Classical Latin: fossilis, literally ‘obtained by digging’) is any preserved remains, impression, or trace of any once-living thing from a past geological age.