Quaternary definition

Quaternary means the second period of the Cenozoic era, following the Tertiary; also, the corresponding system of rocks. It began two to three million years ago and extends to the present. It consists of two grossly unequal epochs: the Pleistocene, up to about 10,000 years ago, and the Holocene since that time.
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Quaternary means the second period of the Cenozoic era, following the Tertiary; also, the corresponding system of rocks. It began two to three million years ago
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Examples of Quaternary in a sentence

  • Medical/Dental Areas: All surfaces except ceilings shall be cleaned with Quaternary Ammonium Germicide for infection control including sinks, counters, fixtures, cabinet fronts, scales, hard floors, doors, chairs, exam lights and tables.

  • Use of Quaternary Ammonium Compounds (QACS) or Nonyl- Phenol Ethoxylates (NPES); Section 15.

  • They also include other contaminates and chemical residues such as Quaternary Ammonium Compounds (QACs) and Nonylphenol Ethoxylates (NPEs).

  • The subproject area is underlain by Quaternary sediments consisting of clay, silt, and various grades of sand, gravel, and pebbles.

  • Overview of Primary, Secondary, Tertiary and Quaternary Structure of proteins.

  • Owing to the all-to-often lack of fossils and of rocks suitable for radiometric or palaeomagnetic dating, no clear-cut dividing line between the Tertiary and Quaternary successions could be established (Kent 1980).

  • Lumber pressure-treated with Alkaline Copper Quaternary (AQC) process is very corrosive therefore specialcareshould be used when selecting fasteners and hardware.

  • Quaternary oblique extensional tec- tonics in the Ethiopian Rift (Horn of Africa).

  • Note the intimate association of the Wonji Fault System and Quaternary volcanoes (in red).

  • Each segment of the fault sys- tem is 60 - 80 km long and about 20 km wide and consists of magmatic intrusion at depth and Quaternary dikes strongly coupled to faulting (Corti, 2009).

Related to Quaternary

  • Embryo/fetus means the developing human organism from conception until the time of birth.

  • Cannabinoid edible means food or potable liquid into which a cannabinoid concentrate, cannabinoid extract or dried marijuana leaves or flowers have been incorporated.

  • Cannabinoid means any of the chemical compounds that are the active constituents of marijuana.

  • Massage therapist means a person who practices massage therapy.

  • Holocene means the most recent epoch of the Quaternary period, extending from the end of the Pleistocene Epoch to the present.

  • Total tetrahydrocannabinol means the sum of the percentage by weight of tetrahydrocannabinolic acid multiplied by eight hundred seventy-seven thousandths plus the percentage of weight of tetrahydrocannabinol.

  • Prosthesis means an artificial substitute for a missing body part.

  • Expected week of childbirth means the week, starting on a Sunday, during which the mother's doctor or midwife expects her to give birth.

  • Massage therapy means performance for compensation of massage, myotherapy, massotherapy, bodywork, bodywork therapy, or therapeutic massage including hydrotherapy, superficial hot and cold applications, vibration and topical applications, or other therapy which involves manipulation of the muscle and connective tissue of the body, excluding osseous tissue, to treat the muscle tonus system for the purpose of enhancing health, providing muscle relaxation, increasing range of motion, reducing stress, relieving pain, or improving circulation.

  • Seaplane means an aeroplane capable normally of taking off from and alighting solely on water;

  • Participating Marriage and Family Therapist means a Marriage and Family Therapist who has a written agreement with the Claim Administrator or another Blue Cross and/or Blue Shield Plan to provide services to you at the time services are rendered.

  • Embryo or "fetus" means the developing human organism from conception until time of birth.

  • Physiotherapist means a person who is a) duly registered with the Supplementary Medical Professions Council of Hong Kong pursuant to the Supplementary Medical Professions Ordinance (Cap. 359 of the Laws of Hong Kong) or in relation to jurisdictions outside of Hong Kong, a body of equivalent standing; and b) legally authorised for practising physiotherapy in the locality where the treatment is provided to an Insured, but in no circumstance shall include the Insured, the Policyholder, an insurance intermediary or an employer, employee, Immediate Family Member or business partner(s) of the Policyholder and/or the Insured(s).

  • Hydraulic fracturing means the fracturing of underground rock formations, including shale and non-shale formations, by manmade fluid-driven techniques for the purpose of stimulating oil, natural gas, or other subsurface hydrocarbon production.

  • Gasohol means a blended fuel composed of gasoline and fuel grade ethanol.

  • Skilled journeyperson means a worker who either:

  • Non-Participating Marriage and Family Therapist means a Marriage and Family Therapist who does not have a written agreement with the Claim Administrator or another Blue Cross and/or Blue Shield Plan to provide services to you at the time services are rendered.

  • Sadomasochistic abuse means actual or explicitly simulated flagellation or torture by or upon a person who is nude or clad in undergarments, a mask or bizarre costume, or the condition of being fettered, bound or otherwise physically restrained on the part of one so clothed.

  • Pregnant or “pregnancy” means that female reproductive

  • Cell means a single encased electrochemical unit containing one positive and one negative electrode which exhibits a voltage differential across its two terminals.

  • Playground means a public outdoor recreation area for children, usually equipped with swings, slides, and other playground equipment, owned and/or managed by a city, county, state, or federal government.

  • Infant means a child under one year of age.

  • Juvenile means any person defined as a juvenile in any member state or by the rules of the Interstate Commission, including:

  • Dusting aid means a product designed or labeled to assist in removing dust and other soils from floors and other surfaces without leaving a wax or silicone based coating. “Dusting Aid” does not include “Pressurized Gas Duster.”

  • Marriage and family therapist means a marriage and family therapist licensed by the board to practice marriage and family therapy as defined in division (G) of section 4757.01 of the Revised Code.

  • Medical marijuana concentrate means a specific subset of Medical Marijuana that was produced by extracting Cannabinoids from Medical Marijuana. Categories of Medical Marijuana Concentrate include Water-Based Medical Marijuana Concentrate, Food-Based Medical Marijuana Concentrate, Solvent-Based Medical Marijuana Concentrate, and Heat/Pressure- Based Medical Marijuana Concentrate.