Geologists have shown that a very long time ago the Waikato river came through the Hinurea valley and filled the Hauraki Basin with pumice, mud, drift wood and gravel to a depth of over 1200 ft. You can still see evidence of sea beaches between Shelly Beach and Maukoro.

Geologists use a variety of methods to give both relative and absolute dates to geological events.

Geologists use a number of field, laboratory, and numerical modeling methods to decipher Earth history and understand the processes that occur on and in the Earth.

Geologists use the term " marble " to refer to metamorphosed limestone ; however stonemasons use the term more broadly to encompass unmetamorphosed limestone.

Geologists use specialised ground-penetrating radars to map the composition of Earth's crust.

Geologists use their measurements of rock geometries to understand histories of strain in the rocks.

Geologists and soil scientists usually consider the separation to occur at a particle size of 2 µm ( clays being finer than silts ), sedimentologists often use 4-5 μm, and colloid chemists use 1 μm.

Geologists use both large fossils ( called macrofossils ) and microscopic fossils ( called microfossils ) for this process, known as biostratigraphy.

Geologists use palynological studies in biostratigraphy to correlate strata and determine the relative age of a given bed, horizon, formation or stratigraphical sequence.

* Cowen's " The First Geologists " ( chapter on Stone Age / Homo habilis use of quartzite )

Geologists know the exact chemical composition of this tephra ( which they call Mazama Ash ) and both geologists and archeologists use the distinctive layer it formed in the specific techniques of relative dating called tephrochronology.

Engineers that are certified as a Professional Engineer in his or her state will use the suffix P. E., Certified Professional Geologists use P. G., Certified Professional Logisticians use CPL, and Chartered Engineers use CEng.

Geologists have tried to use hotspot volcanic chains to track the movement of the Earth's tectonic plates.

Geologists and engineering geologists can also use their knowledge of earth process and their ability to interpret surficial geomorphology to determine relative slope stability based simply on site observations.

Geologists use the term Collyhurst Sandstone for this type of soft red sandstone, which occurs in north-west England.

Geologists, energy researchers and many other scientists from the following countries are represented in ASPO: Australia, Austria, Denmark, China, Finland, France, Germany, Ireland, Italy, Netherlands, Norway, Portugal, South Africa, Spain, Sweden, Switzerland and the United Kingdom.

Geologists have proposed several theories about their origin.

Geologists have found evidence that a major outbreak of Lake Agassiz, about 13, 000 years ago, drained north through the Mackenzie River into the Arctic Ocean.

Geologists and volcanologists also disagree about whether an eruption on the Cumbre Vieja would cause a single large gravitational landslide or a series of smaller landslides.

Geologists estimate that the volcano was once about twice its current size.

Geologists find nothing anomalous about upright fossil trees found in Carboniferous coal-bearing strata being associated with marine or brackish water fossils.

The Nimrod Glacier is a major glacier about 135 km ( 85 mi ) long, flowing from the polar plateau in a northerly direction through the Transantarctic Mountains between the Geologists and Miller Ranges, then northeasterly between the Churchill Mountains and Queen Elizabeth Range, and finally spilling into Shackleton Inlet and the Ross Ice Shelf between Capes Wilson and Lyttelton.

The Geologists Range is a mountain range about long, standing between the heads of Lucy and Nimrod Glaciers in Antarctica.

Geologists can also give precise absolute dates to geologic events.

Geologists therefore hypothesize that the world at that time was affected by a very severe glaciation, perhaps the most severe in geologic history ( see Snowball Earth ).

Geologists divide Earth's history into eons, eras, periods, epochs, and faunal stages characterized by well-defined breaks in the fossil record ( see Geologic time scale ).

Geologists like Émile Haug and Hans Stille saw the Caledonian orogeny as one of several episodic phases of mountain building that had occurred during the Earth's history.

Geologists have identified at least five separate events which have led to sediment deposition, including the Grenville orogeny ( the collision of continents that created the supercontinent Rodinia ) and the Appalachian orogeny during the formation of Pangaea.

Geologists believed prior to the mission that both of these formations were volcanic in origin ; however, samples returned from the lunar surface have since proven this hypothesis is incorrect.

Geologists feared, however, that samples obtained from the crater might have been contaminated by the Imbrium impact, thus preventing Apollo 16 from obtaining samples of pre-Imbrium material.

Geologists chose the area because of a wide crater created approximately 1. 6 million years ago by a large meteorite.

Geologists explain the effect in terms of a bucket of mud into which a large flat stone is placed, forcing the mud to creep up the sides of the pail.

Geologists also found indications of abundant deposits of colored stones and gemstones, including emerald, ruby, sapphire, garnet, lapis, kunzite, spinel, tourmaline and peridot.

Geologists Sam Bonis and T. Waltham argue that the recurring piping features in Guatemala are caused by sewer leaks eroding soft volcanic deposits underlying Guatemala City.

Geologists also study unlithified material, which typically comes from more recent deposits.

Geologists also obtain data through stratigraphy, boreholes, core samples, and ice cores.

Geologists and geophysicists study natural hazards in order to enact safe building codes and warning systems that are used to prevent loss of property and life.

Geologists generally refer to these incipient plates as the Nubian Plate and the Somali Plate.

Petroleum Geologists Mem.

Geologists believe that the twin mountains once formed one range.

Geologists describe this type of landscape as a " drowned coast ," where a rising sea level has invaded former land features, creating bays out of valleys and islands out of mountain tops.

However, there was a movement amongst geologists ( particularly Neogene Marine Geologists ) to also include ongoing geological time ( Quaternary ) in the Neogene, while others ( particularly Quaternary Terrestrial Geologists ) insist the Quaternary to be a separate period of distinctly different record.

* Scholle, P. A., 1978, A Color illustrated guide to constituents, textures, cements, and porosities of sandstones and associated rocks, American Association of Petroleum Geologists Memoir no.