Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Arc Length Function01:22

Arc Length Function

142
The arc length function represents the total distance traveled along a smooth curve measured from a fixed starting point to a variable endpoint. For curves that are continuous and differentiable, arc length provides a precise way to quantify distance when straight-line approximations are insufficient.To derive arc length, the curve is divided into many small segments. Each segment is approximated by a straight line whose length depends on the horizontal and vertical changes over that interval.
142
Isothermal Processes01:21

Isothermal Processes

5.4K
A thermodynamic process that occurs at constant temperature is called an isothermal process. Heat slowly flows into the system or out of the system to maintain thermal equilibrium. Processes involving phase changes like water evaporation into steam or freezing water into ice at a constant temperature are examples of Isothermal Processes.
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
5.4K
Measurements of Strain01:27

Measurements of Strain

2.8K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
2.8K
Global Climate Change01:50

Global Climate Change

29.7K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.7K
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

615
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
615
Precipitation Gravimetry01:03

Precipitation Gravimetry

16.1K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
16.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The landscape of evolution.

National science review·2026
Same author

Quantification of Cardiovascular Disease Risk Among Hypertensive Subjects in Active Romanian Population Using New Echocardiographic, Biological and Atherogenic Markers.

Medicina (Kaunas, Lithuania)·2026
Same author

The Off-Target Cardioprotective Mechanisms of Sodium-Glucose Cotransporter 2 Inhibitors: An Overview.

International journal of molecular sciences·2024
Same author

Empagliflozin and dapagliflozin decreased atrial monoamine oxidase expression and alleviated oxidative stress in overweight non-diabetic cardiac patients.

Molecular and cellular biochemistry·2024
Same author

Latitude-dependent oxygen fugacity in arc magmas.

Nature communications·2024
Same author

Unexpected Genetic Twists in Patients with Cardiac Devices.

Journal of clinical medicine·2024

Related Experiment Video

Updated: Mar 29, 2026

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
07:58

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

Published on: August 7, 2017

10.0K

Quantifying crustal thickness over time in magmatic arcs.

Lucia Profeta1, Mihai N Ducea1,2, James B Chapman1

  • 1University of Arizona, Department of Geosciences, AZ 85721, USA.

Scientific Reports
|December 4, 2015
PubMed
Summary

Geochemical ratios like Sr/Y and La/Yb in magmatic arcs correlate with crustal thickness. This allows scientists to reconstruct past crustal evolution in ancient mountain ranges using these geochemical proxies.

More Related Videos

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod
06:06

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod

Published on: August 17, 2016

11.8K
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.6K

Related Experiment Videos

Last Updated: Mar 29, 2026

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
07:58

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

Published on: August 7, 2017

10.0K
Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod
06:06

Sediment Core Extrusion Method at Millimeter Resolution Using a Calibrated, Threaded-rod

Published on: August 17, 2016

11.8K
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.6K

Area of Science:

  • Geochemistry
  • Tectonics
  • Petrology

Background:

  • Subduction zones generate magmatic arcs, influencing crustal evolution.
  • Geochemical variations in arc rocks can reflect underlying tectonic processes.
  • Understanding crustal thickness changes is key to interpreting arc magmatism.

Purpose of the Study:

  • To establish correlations between geochemical proxies (Sr/Y, La/Yb) and crustal thickness in modern magmatic arcs.
  • To validate the use of these geochemical parameters for inferring crustal thickness in ancient subduction systems.
  • To provide a method for reconstructing crustal thickness variations through geologic time.

Main Methods:

  • Analysis of whole-rock geochemical data (Sr/Y, La/Yb) from intermediate rocks.
  • Compilation of data from modern subduction-related magmatic arcs around the Pacific.
  • Development and application of empirical fits to correlate geochemical ratios with crustal thickness.
  • Comparison of inferred crustal thicknesses with independent geological data.

Main Results:

  • Global and regional correlations were identified between Sr/Y, La/Yb ratios and crustal thickness.
  • Empirical fits accurately predict crustal thickness in modern arc settings.
  • Inferred crustal thicknesses for Cenozoic and Mesozoic arcs align with existing geological evidence.
  • The geochemical proxies effectively track crustal thickness changes over geologic timescales.

Conclusions:

  • Sr/Y and La/Yb ratios serve as reliable geochemical proxies for crustal thickness in magmatic arcs.
  • These proxies can be utilized to reconstruct crustal thickness evolution in ancient orogens.
  • The findings support the application of geochemical methods in paleotectonic reconstructions.
  • Averaging geochemical data over volcanic systems enhances the reliability of crustal thickness inferences.