Detailed Descriptions of Soil Pits on Huntington River Terrace
The soil pits on Huntington River Terrace provide detailed insights into the soil composition at different depths. Terrace #1 exhibits dark greyish-brown to light olive-brown layers with varying textures, while Terrace #2 showcases well-sorted clay and gravel transitions. Terrace #3 presents a mixture of grassy and sandy layers with distinct plow horizons. Terrace #4 features organic layers followed by compacted soil with alternating rock layers. Each description includes information on color, texture, bioturbation, and contact between horizons.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
E N D
Presentation Transcript
Description of Soil Pit on Huntington River Terrace #1 Steve M., Sara L., Brendan H., Silas C-A 0 cm O Horizon (0 - 5 cm) Very dark greyish brown, 2.5y 3/2. Lots of leaf litter, roots, loose organic material, fluffy O 5 cm A Horizon (5-18 cm) Dark olive brown, 2.5y 3/3; homogeneous soil color. Silty clay. Lightly saturated with roots and decomposed organic material A 18 cm 19 cm E E Horizon (18 - 19 cm) Dark grey brown, 2.5y 4/2 Not evenly distributed, very mottled. Sandy silt Patchy oxidation at surface of B and bottom of E horizons, discontinuous contact. B B Horizon (19 57 cm) Light olive brown 2.5y 5/6 Homogeneous coloring and sorting. Sandy clay, cohesive, much thicker than previous layers. Roots extend down to approx 50 cm. Slight orange tint 57 cm C C Horizon (57 92 cm) Light olive brown 2.5y 5/4 Sand transitioning towards larger cobbles. Extends past 92 cm. Sand grains and cobbles very well rounded and sorted. 92 cm 100 cm
Description of Soil Pit on Huntington River Terrace #2 Will Klein, Devin Noel, Drew Groth, Taylor Norton 0 cm O/A Horizon (0 22 cm): Well sorted clay with loamy texture. Color = 7.5 YR 4/4. Organic material. O and A are mixed together due to farmland plowing. This creates a clear contact between the O/A and B horizons. Evidence of worm burrows. O/A 22 cm B Horizon (Left Side 22-71 cm, Right side 22-52 cm): patchy oxidized colors (7.5 YR 5/8 and 7.5 YR 4/6). Uneven delineation at bottom. Silty grain size (very fine). Scattered roots and worm burrows throughout B horizon. Patches more oxidized material present. 52 cm B C1 Horizon (52 -71 cm): Color= 7.5 YR 4/2. Fine gravel. No evidence of bioturbation. Undefined contact between C1 and C2. C1 71 cm C2 Horizon (71-85 cm): Poorly sorted coarse gravel. Contact between C2 and C3 is very defined. No evidence of bioturbation. C C2 85 cm C3 Horizon (85-91 cm):Color 7.5 YR 5/4. Fine to medium grained sand. Contact between C3 and C4 well defined. Sand layer deposited during a flooding period. C3 91 cm C4 Horizon (91-97 cm): Poorly sorted coarse gravel. Same type of gravel as C2. C4 97 cm
Description of Soil Pit on Huntington River Terrace #3 Daniel Gordon, Nicole Sala, Molly Bruno, Mia Pinheiro 0 cm O Horizon (0 2.5 cm): Mostly grass with small root system. O Ap Horizon (2.5 30 cm): Dark brown in color (3/3 10y), well sorted sandy matrix with mixed cobbles (avg. 2 in, max was 15in), past plowing mixed A and E horizons to yield Ap horizon, sharp contact with B horizon due to defined plow depth Ap 20 cm Distinct plow horizon B Horizon (30 80+ cm): About 4 cm of oxidized soil (4/3 2.5y) before transitioning into olive brown (4/4 2.5y) sand, homogenous sorting of sandy grains, patches of oxidized material throughout, trace amounts of bioturbation present (most likely due to worm activity) 40 cm B 60 cm = Cobble and pebbles +80 cm
Description of Soil Pit on Huntington River Terrace #4 Michael Chirigos, Ben Wilkes, KJ Darling, Elisabeth McElwee O- Horizon (0-7cm) Pine straw, sticks, leaves, some small new growth as well as decomposing leaves and organic matter. Hue 2.5 Y 3/3 Dark Olive Brown 0 cm O 7 cm A- Horizon (7-17cm) Organic matter is largely decomposed. Small roots and grains are present. Hue 2.5 Y 4/4 Olive Brown A 17 cm B-Horizon (17-30cm) Some larger roots; the soil is more compacted here. Soil is not well developed and hasn t oxidized. Hue 2.5 Y 4/4 Olive Brown. A and B layers are slightly blended at contact. B 30 cm 37 2 cm C C- Horizon (30-37cm) Alternating layers of small and large rocks separated by large grain sand. Most pebbles and cobbles have been smoothed and rounded by water. Hue 2.5Y 4/4 Olive Brown 44 2 cm 51 2 cm 58 2 cm 7 cm
